Sleep: The Most Underrated Performance Tool

We spend a lot of time talking about training and food. Sleep quietly determines how well either of them works – and it's usually the first thing to be sacrificed.

What under-sleeping does to training

• Reduced strength output, particularly in the afternoon and evening.
• Slower reaction time and worse technique under fatigue – the injury risk sits here.
• Higher perceived effort, so the same workout simply feels harder.
• Increased appetite and cravings, driven by shifts in ghrelin and leptin.

“If you're choosing between a 5:30am session on five hours' sleep and a 6pm session on eight, take the eight.”

The habits that actually move the needle

Ignore the gadget rabbit hole for a moment. Four unglamorous things account for most of the improvement people see.

1. A consistent wake time – even at weekends. Consistency beats duration.
2. Daylight within an hour of waking, ideally outside.
3. Caffeine cut-off eight to ten hours before bed. Most people underestimate this badly.
4. A cool, dark, boring bedroom. 17–19°C is the sweet spot.

Training late? Adjust rather than skip

An evening class won't wreck your sleep, but the routine around it might. Eat properly beforehand, keep the post-session scroll short, and give yourself thirty minutes of dim light before bed. The session is worth keeping – protect the wind-down instead.

The realistic goal

Seven to nine hours, most nights, at roughly the same time. That's it. It's the highest-return change most of our members ever make, and it costs nothing.