By Dan Remon · Evidence checked October 2026
The calendar decides your week before you do. Peak performance starts when you take that decision back.
I’ve worked in health and performance since 1996. The leaders who perform best over years aren’t the ones who push hardest. They run a few simple practices every day, and those practices hold when the week goes wrong.
Here are the ones I use myself and install with clients, what the research says about each, and how to put them in without starting 6 new things on a Monday.
What is peak performance?
Peak performance is doing your most important work at your best level, reliably, over months and years rather than in the odd great week. For someone running a company or a team, it rests on a short list of daily practices: enough sleep, your best hours given to your most important work, one task at a time, regular training, food that suits your body and a weekly review. None of them is complicated. The hard part is keeping them running on a bad week, which is why I install them as a system and measure them.
Sleep comes before strategy
If you’re running on 6 hours, every decision you make is made by a tired version of you.
In a randomised laboratory study at the University of Pennsylvania, healthy adults were held to 4, 6 or 8 hours in bed a night for 14 days and compared with a group kept awake for 3 nights. Restricting sleep to 6 hours or less produced cognitive deficits equal to up to 2 nights without any sleep. Their sleepiness ratings jumped at first, then rose only a little more, which suggests they were largely unaware of how far their performance had dropped.1
That last finding is the one to remember. You won’t feel the deficit, so you won’t fix it on your own. For adults aged 18 to 60, the CDC recommends 7 or more hours a night.2 What I do with that: a fixed wake time 7 days a week, a hard stop on screens and work before bed, and sleep treated as the first appointment in the calendar. If stress is what keeps you up, stress management for executives covers the recovery side.
Give your best hours to your most important work
Everyone has a window in the day when their thinking is sharpest. Find yours by noting, for one week, when hard thinking feels easy and when it drags. Then decide what gets that window, before the inbox decides for you.
I use the Calendar of Kings for this. It decides what ships first, what waits and what gets killed, before anything is booked into your week.
- Ships first: the work that moves the business most. It goes into your best hours and gets blocked like a board meeting.
- Waits: real work that doesn’t need your sharpest thinking, such as email, routine calls and admin. It goes into the lower-energy parts of the day.
- Killed: work that shouldn’t be yours or shouldn’t happen at all. It comes off the list, so it stops taking your attention.
The sort is the easy part. Holding it is harder, because someone will always want your best hour for their meeting. Treat anything that ships first as already booked, so a request for that slot gets a different time.
The Calendar of Kings sits inside the Stealth OS next to the Weekly Compass, the 30-minute plan that blocks the week. The full weekly rhythm is in a productivity system that survives a bad week.
Do one thing at a time, then take a break
My most productive pattern is 30 minutes of focused work, then 5 minutes of movement. I call the focused blocks Stealth Work: phone away, one task, no meetings.
The single task matters. In a series of 4 experiments, switching between tasks cost time compared with repeating the same task, and the cost grew as the rules of the tasks got more complex.3 Every glance at your inbox in the middle of a block is a switch, and the work you do as a leader is rarely simple.
The break matters too, though the evidence is more modest than most productivity advice suggests. A 2022 meta-analysis of 22 study samples and 2,335 people looked at micro-breaks of 10 minutes or less. They raised vigour (d = 0.36) and reduced fatigue (d = 0.35). The effect on overall performance was small and not statistically significant, and the only significant performance effects were on less demanding tasks. Longer breaks gave a bigger performance boost.4
What I do with it: the 5-minute break is there for energy, so you spend it moving and leave the phone where it is. After the heaviest block of the day, take a longer one.
Train to the minimum effective dose
Better beats more. My own minimum effective dose to stay lean and strong is 3 strength sessions of 20 minutes a week, plus 2 intervals of 5 minutes. That fits a hotel gym and a full diary.
Training helps your head as well as your body, though one session does less than people think. A meta-analysis of 79 studies found a single bout of exercise had a small positive effect on cognitive performance (g = 0.097), whether people were tested during exercise, straight after or later. Duration, intensity, the type of task and fitness all changed the size of the effect.5
So count the sharper head as a bonus. You train for the base: strength, fitness and the capacity to hold a full week. Find the least training that moves your numbers, then protect it. The corporate athlete covers how to train for the job you actually do.
Fuel to your data
When I want to drop body fat, I don’t cut the amount I eat. I adjust the macros, and sometimes the order I eat them in. I know what works for me because I tested it.
Your answer will be different. That’s why we start with blood work and body composition. A meal plan off the internet was written for someone else. The aim for a working day is steady energy through the afternoon, without the 15:00 crash. Personalised nutrition explains how to eat to your own data.
Review the week and track the causes
Daily practices drift without a review. Revenue, weight and promotion are outcomes, and they move late. Sleep, training sessions, focused hours and energy move first, so those are what I track.
The daily signal comes from the Stealth Tracker, a 60-second check-in. Mine covers sleep, training, energy and focus. The week closes with the Friday Debrief: 15 minutes on what worked, what didn’t and what changes next week. A missed day gets logged like any other day, because the miss tells you something about the system.
How to build peak performance habits
Stack 6 new practices onto one Monday and most of them are gone by Friday. Build them in layers instead. In the Stealth OS that’s W10, the Performance Layering Stack: each new practice goes on top of one that already runs, so the base holds while you build.
Sleep goes first, because everything else sits on it. Then your best hours. Then the focused blocks, training, food and the weekly review, one at a time. Add the next layer when the last one runs without thinking. To make each one stick, attach it to something you already do every day, which is the idea behind habit stacking.
How to start
- The 1% Scorecard. 8 questions, 2 minutes, free. You get a score out of 100 and the one thing to install first, so you know which layer to start with.
- Stealth Coaching. Private 1:1 coaching, online or in person in Bangkok. We audit where you are, install the practices in the right order and track them together. It starts with a Stealth Strategy Call so we both know it’s the right fit, and has a 6-month minimum.
Install. Execute. Compound.
Related reading: Productivity coaching for founders: install a system, 5 systems for intentional focus and action and How to get into a flow state: 5 ways to get there faster.
FAQ
How do you reach peak performance every day?
Run a short list of practices daily: protect your sleep, give your best hours to your most important work, do one task at a time, train to a minimum effective dose and review the week. Install them one at a time, so each one holds on a bad week before you add the next.
How much sleep do you need for peak performance?
The CDC recommends 7 or more hours a night for adults aged 18 to 60. In a controlled laboratory study, 2 weeks at 6 hours or less produced cognitive deficits equal to up to 2 nights without sleep, and people were largely unaware of it.
Does multitasking hurt performance?
Switching between tasks costs time, and in laboratory experiments the cost grew as the tasks got more complex. That’s why I work in 30-minute blocks on one task with the phone away.
Do you need a coach to reach peak performance?
Not to start. Take the 1% Scorecard and install the first practice it points to. A coach helps when you know what to do and it still isn’t happening, and you want someone measuring it with you.
Sources
- Van Dongen, H. P. A., Maislin, G., Mullington, J. M., & Dinges, D. F. (2003). The cumulative cost of additional wakefulness: dose-response effects on neurobehavioral functions and sleep physiology from chronic sleep restriction and total sleep deprivation. Sleep, 26(2), 117-126. doi.org/10.1093/sleep/26.2.117
- Centers for Disease Control and Prevention. (2023). About sleep. Last reviewed 20 November 2023. cdc.gov/sleep/about/index.html
- Rubinstein, J. S., Meyer, D. E., & Evans, J. E. (2001). Executive control of cognitive processes in task switching. Journal of Experimental Psychology: Human Perception and Performance, 27(4), 763-797. doi.org/10.1037/0096-1523.27.4.763
- Albulescu, P., Macsinga, I., Rusu, A., Sulea, C., Bodnaru, A., & Tulbure, B. T. (2022). “Give me a break!” A systematic review and meta-analysis on the efficacy of micro-breaks for increasing well-being and performance. PLoS ONE, 17(8), e0272460. doi.org/
10.1371/ journal.pone.0272460 - Chang, Y. K., Labban, J. D., Gapin, J. I., & Etnier, J. L. (2012). The effects of acute exercise on cognitive performance: a meta-analysis. Brain Research, 1453, 87-101. doi.org/
10.1016/ j.brainres.2012.02.068
This article is general information, not medical advice.
