How to identify and manage stress styles with Dr. Jemma King

Originally published on July 11, 2023

Stress styles shape how pressure shows up in your body, your thinking, and your emotions, and learning yours can help you manage stress before it becomes chronic. In Episode 229 of the WHOOP Podcast, Dr. Kristen Holmes, Global Head of Human Performance, Principal Scientist at WHOOP, speaks with behavioral psychologist Dr. Jemma King, a research fellow at The University of Queensland School of Psychology and specialist external advisor to McKinsey & Company, about how to spot your stress pattern, protect sleep, reduce middle-of-the-night wakeups, and prepare for high pressure moments. This article turns that conversation into six practical questions you can use to make better everyday decisions around stress, recovery, and performance.

To listen to Episode 229 of the WHOOP Podcast in full, head to the WHOOP Podcast on YouTube.

What is a stress style, and how can you spot yours?

A stress style is the pattern your system defaults to when pressure starts to pile up. King describes three broad ways that pattern tends to show up: emotionally, cognitively, or physically.

For some people, stress becomes visible fast. They get snappy, tearful, or visibly agitated. Others stay outwardly calm but lose sharpness, becoming forgetful, indecisive, or mentally foggy. A third group looks stoic while the body carries the load through jaw clenching, chest tightness, fatigue, digestive issues, or illness. If you already notice one of those early signs, King treats that first signal as useful data rather than a personality flaw.

She also argues that stress tolerance is deeply individual. In the conversation, King points to influences that start before birth, including family patterns, prenatal environment, and learned behavior, then move into day-to-day variables such as sleep, blood glucose, and, for some people, menstrual cycle timing. That is why two people can face the same workload and respond very differently.

King put a rough timeline on when stress often stops feeling abstract and starts showing up in a more obvious way:

"You can be in sort of a high level of stress, I think, for about 8 weeks, and then your typical circuit breaker will manifest. And so the circuit breaker is your stress style."

The practical goal is not to wait for a breakdown. It is to notice the first reliable clue. For one person, that may be a racing mind. For another, it may be repeated stress symptoms like headaches, irritability, or poor sleep. Once that first clue is clear, King recommends building a personal protocol around it, so the sign becomes a cue to act early.

What you should take away

• Stress styles usually show up first as emotional reactivity, mental fog, or physical symptoms.
• Your earliest sign of stress is the most useful signal to track, because it appears before performance drops further.
• King suggests that prolonged high stress often becomes harder to hide after about eight weeks.
• Stress tolerance varies with sleep, fueling, life history, and current physiology, so the same situation will not affect everyone equally.

If you want to hear King unpack stress styles and early warning signs, listen to the full episode on Youtube.

When does acute stress start to become chronic stress?

Once you can spot your pattern, the next question is whether the stress itself is brief and useful or cumulative and costly. King draws a clear distinction: acute stress is part of normal life, while chronic stress shows up when demand keeps exceeding the resources you feel you have available.

In the episode, King defines chronic stress as a more prolonged state where the internal calculation shifts from "this is hard" to "I do not have enough to cope with this." That perceived mismatch matters. It is also why stress is not only about workload. It is about whether your physiology, sleep, emotional state, and environment are giving you enough margin to handle what is in front of you.

King also breaks stress into multiple buckets instead of treating it as one generic force. The list she walks through includes physiological stress, emotional stress, sensory stress, mental stress, comparison-driven desire stress, and higher-order stress about meaning, purpose, and alignment. That framing lines up with later WHOOP work on how stress perception shapes recovery, where the way a person interprets pressure changes the physiological response that follows.

Her definition of chronic stress is direct:

"Chronic stress is more prolonged in nature. It's more than just the usual day-to-day stress that we experience. And that's when it exceeds your resources."

That is why King is skeptical of untargeted recovery fixes. If sensory overload is driving the problem, a vacation that still includes constant scrolling may not help much. If emotional strain is the real issue, a day off without any change in the underlying relationship dynamic may leave you feeling just as depleted. Her rule is simple: match the kind of rest to the kind of stress.

What you should take away

• Acute stress is common and can be useful, but chronic stress builds when demands keep exceeding perceived coping resources.
• Stress can come from physiology, emotions, sensory overload, mental load, comparison, or a lack of alignment with purpose.
• Recovery works better when the form of rest matches the form of stress.
• The question is not only how much pressure you carry, but also whether your body and mind have enough margin to manage it.

If you want to hear King go deeper on acute versus chronic stress and the different categories of load, listen to the full episode on Youtube.

Which daily habits protect sleep and recovery when stress is high?

That distinction quickly turns into a sleep question, because King treats sleep as the first lever to protect when stress is running high. Her view is simple: if sleep is unstable, the rest of the stress conversation gets harder.

King starts with sleep consistency and sleep architecture. She argues that many people think they sleep well because they spend enough time in bed, but they do not know whether they are actually getting enough slow-wave sleep, also called deep sleep, or enough REM sleep. In her view, that is where objective data becomes useful. Related WHOOP work in Stress, Sleep and Cognitive Functioning and How to Manage Stress With Science makes the same point from another angle: sleep quality and next-day cognitive performance are tightly connected.

King's explanation of deep sleep is mechanistic, which is why it is so memorable:

"Unless you're hitting slow-wave sleep, you're not clearing away all the metabolic byproducts of thinking, that product adenosine."

From there, the list of sleep disruptors gets very practical. King flags alcohol, heavy protein close to bed, sugar, and pre-bed rumination. She also calls out monosodium glutamate, or MSG, as something that can show up in her data reviews as more light sleep, less slow-wave sleep, and unusually vivid dreaming. That observation is from her applied work with people using WHOOP, not from a named published trial, so it is best read as a field observation rather than settled consensus.

Light matters, too. King says that pre-bed light exposure above about 80 lux can push the circadian system in the wrong direction. Cognitive load matters just as much. If you lie down and replay an argument or tomorrow's to-do list, King says the brain treats that imagined event as something worth preparing for physiologically, which can raise stress hormones before sleep.

Her daytime strategy is equally specific: use brief "nano-intermissions" between tasks. King describes stopping for about 30 seconds before the next tab, call, or task shift, then using resonant breathing. In the episode, she describes a paced pattern of six in and six out.

What you should take away

• Sleep consistency and enough deep sleep are central stress-protection habits, not optional extras.
• Alcohol, sugar, heavy late meals, light exposure, and rumination can all make stress harder to recover from overnight.
• Objective sleep data can separate "I was in bed" from "I actually recovered."
• Brief breathing resets during the day can lower the amount of stress you carry into bed.

If you want to hear King unpack sleep architecture, pre-bed habits, and resonant breathing, listen to the full episode on Youtube.

Why do stress and sleep problems often show up at 2 a.m.?

If daytime load and pre-bed habits are the setup, middle-of-the-night wakeups are often the symptom. King says there is no single proven answer for why so many people wake around 2 a.m. or 3 a.m., but she outlines several plausible mechanisms.

One explanation centers on unresolved cognitive load. King describes REM sleep as a period for consolidating memory, making sense of emotion, and also forgetting what does not need to be kept. If a pending decision still feels important, the brain may wake you so the prefrontal cortex can deal with it consciously. Her solution is a structured brain dump before bed. Write down the issue, then assign it a time the next day, such as 10:15 a.m. or 10:35 a.m., so the brain no longer has to keep it active overnight.

King also points to the gut microbiome as an area she is actively studying. In the conversation, she notes that the digestive tract contains about 2.5 kilograms of microbes, and that their day-night rhythms may affect sleep. On first mention, King names Microba, a microbiome testing company that has worked with researchers at The University of Queensland on related observations.

Her quote on the scale of that system is striking:

"We know that inside your digestive tract, you've got around about 2.5 kilograms of gut biome."

King connects that observation to late-night sugar intake and false hunger. Her theory is that simple carbohydrates can feed certain microbes quickly, encourage overgrowth, and contribute to hunger signals that wake people up. She also notes that work with Microba has found an association between lower microbiome biodiversity and more frequent 3 a.m. wakeups, though the direction of causality is still unclear.

This is also where WHOOP data can help. Patterns in Stress Monitor, overnight resting heart rate, and Sleep trends can show whether late meals, sugar, or emotionally loaded evenings line up with repeated overnight disruption.

What you should take away

• Repeated 2 a.m. wakeups can reflect unresolved cognitive load, late-night fueling issues, or other physiology that still needs sorting out.
• A timed brain dump can reduce the need for your brain to keep important decisions active overnight.
• King treats the gut microbiome as a promising factor in sleep disruption, especially when late sugar intake is involved.
• Overnight wakeups are more useful when tracked as a pattern instead of treated as isolated bad nights.

If you want to hear King go deeper on 2 a.m. wakeups, gut biome questions, and false hunger, listen to the full episode on Youtube.

How do movement, emotional skills, and team culture change stress resilience?

Beyond bedtime, King argues that resilience is built during the day and inside the group around you. Movement, emotional skills, social connection, and identity all change how much stress a person can absorb.

On movement, King points to what she described as an Oxford study on forward movement and mood. Her summary was specific: if you want the biggest mood and anxiety benefit, move your body forward in a green environment, preferably where you can see water, with another person, and with a shared goal. The broader idea is that humans evolved in motion, and prolonged stillness can send the brain a misleading signal that something is wrong.

King also brings this framework into high pressure organizations. During her PhD work with Australian Special Forces, she used biomarkers such as cortisol and immunoglobulin A because the people in that environment often underreported stress. The intervention focused on emotional intelligence, emotional flexibility, and learning to read early physiological and psychological signs before stress escalated.

Her description of the most protective daily ingredients was concise:

"In order to be protective, you needed to be intellectually stimulated, socially connected, and physically active.

According to King, the results were not only psychological. The group trained in emotional intelligence showed better cortisol and immune profiles, better memory recall, more accurate shooting, and more people successfully completing an 18-month commando selection course.

Relationships matter in less extreme settings, too. King highlighted Janice Kiecolt-Glaser's blister wound study, which found that couples who argued healed more slowly than couples who interacted positively. She also referenced work with Harvard Business School professor Amy Edmondson, WHOOP, and McKinsey & Company showing that team members reported lower psychological safety when their leader had been sleep deprived or stressed.

That same connection shows up in King's related WHOOP discussion on managing sleep and stress at work. The message is consistent: stress resilience is personal, but it is never purely individual. The room around you matters.

What you should take away

• Forward movement, daylight, green space, and social connection can all lower the daily cost of stress.
• Emotional skills training can improve both wellbeing markers and performance outcomes in high stress environments.
• A multidimensional identity is protective, because losing one role does not have to collapse your whole sense of self.
• Team culture and relationship quality affect recovery, decision making, and performance through real physiology.

How should you prepare for a stressful event or high pressure performance?

Once those daily systems are in place, the final step is how you handle the hours before a big test. King treats anticipatory stress as a real performance cost, because the thoughts you repeat before an event can spend energy long before the event starts.

Her first rule is to stay disciplined with attention the night before. That means avoiding heavy meat, MSG, alcohol, and unnecessary cognitive activation, then hydrating and protecting sleep. If sleep is imperfect, King says the more damaging layer is often the anxiety about poor sleep rather than the single bad night itself.

She framed that distinction in a way that is easy to remember:

"Humans are okay with one night of sleep deprivation. What is dangerous is sleep deprivation plus sleep deprivation anxiety."

The morning routine she describes is performance-focused. Start with protein rather than sugar to avoid a sharp blood glucose swing. Get light into your eyes early to reinforce the circadian signal. Move enough to oxygenate the brain. Then spend time recalling successful performances instead of rehearsing failure.

King also likes specificity. Before a speech, know the first three slides or first three minutes cold. Before a race, know the opening seconds. Right before the event, return to resonant breathing through the nose. If panic spikes, she recommends a vagus nerve reset to interrupt the frantic signaling loop and help you regain control.

This section is where WHOOP data can become especially practical. Recent Sleep, Recovery, resting heart rate, and strain patterns can show whether the issue is true under-preparation or simply normal nerves landing on top of a well-recovered system.

What you should take away

• Anticipatory stress can drain performance before the event begins, so the night before matters.
• One imperfect night of sleep is usually less damaging than the anxiety spiral that follows it.
• Protein, morning light, movement, success recalls, and paced breathing are King's preferred pre-event tools.
• A simple, rehearsed opening sequence lowers cognitive load when pressure is highest.

The bottom line

• Stress styles often appear first as emotional volatility, cognitive fog, or physical symptoms such as jaw clenching, chest tightness, and illness.
• Chronic stress is more likely when pressure keeps exceeding the resources you feel you have available, especially when sleep and fueling are already unstable.
• Sleep consistency and enough slow-wave sleep are core stress-management habits because deep sleep supports overnight clearance and next-day mental sharpness.
• Middle-of-the-night wakeups can reflect unresolved decisions, pre-bed rumination, late sugar intake, or other physiology that is still active overnight.
• Brief breathing resets between tasks can reduce how much stress accumulates across the day and makes its way into sleep.
• Movement in daylight, especially in green space and with another person, can improve mood and lower stress burden.
• Emotional intelligence training can improve both stress biomarkers and performance outcomes in high pressure settings.
• Pre-event preparation works best when it protects sleep, limits unnecessary anxiety, and narrows attention to a few controllable actions.

Frequently asked questions about things discussed in this episode

How does WHOOP help you notice patterns related to your stress style?

WHOOP helps you notice patterns related to your stress style by pairing daytime stress signals with overnight Sleep, Recovery, resting heart rate, and HRV trends. If your stress tends to show up as poor sleep, lower Recovery, or repeated spikes in daytime stress, the pattern becomes easier to spot and act on.

How does WHOOP measure physiological signs of stress during the day?

WHOOP measures physiological signs of stress during the day through Stress Monitor, which uses changes in heart rate and HRV against your personal baseline while accounting for motion. That approach helps separate exercise-related load from other forms of physiological stress.

What does WHOOP show when stress starts affecting sleep?

WHOOP shows stress-related sleep disruption through changes in Sleep performance, sleep stages, overnight resting heart rate, and next-day Recovery. Those signals can help you see whether late meals, alcohol, screen light, or rumination are affecting how well you recover overnight.

What does WHOOP Journal do for stress tracking?

WHOOP Journal helps connect subjective stress with objective physiology by letting you log behaviors, routines, and perceived stress against Sleep and Recovery trends. That makes it easier to test whether specific habits line up with better or worse outcomes.

How can WHOOP help before a high pressure event?

WHOOP can help before a high pressure event by showing whether recent Sleep, Recovery, and strain patterns suggest you are carrying extra load into the moment. Your data can help distinguish normal nerves from a system that has been under-recovered for several days.

How does WHOOP help you test whether movement lowers stress?

WHOOP helps you test whether movement lowers stress by letting you compare days with walks, training, or breathwork against daytime stress patterns and next-day Recovery. Over time, those comparisons can show which forms of movement leave you calmer and better recovered.

What does WHOOP do for people who wake up in the middle of the night?

WHOOP helps people track middle-of-the-night wakeups by showing the full overnight picture around Sleep, resting heart rate, and next-day Recovery. That context can make repeated wakeups easier to connect with stress, late eating, alcohol, or other routines.

When stress starts showing up as foggy thinking, restless sleep, or repeated 2 a.m. wakeups, WHOOP makes those patterns visible enough to change.