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The IRONMAN athlete’s guide to sleep

Most endurance athletes obsess over their training load, nutrition, and gear. Sleep gets treated as whatever’s left over. For an IRONMAN athlete, that’s a costly mistake — not just because of how hard your body works on race day, but because of when race day ends. You might cross that finish line at 10pm. Midnight. […]

The best time to exercise for sleep? Whenever you’ll actually do it

Contributed by Elias Malek, PhD The best time to exercise for sleep is whenever you’ll actually do it. Consistency matters more than timing. Eight Sleep’s mission is to fuel human performance through optimal sleep – but it goes beyond just sleep. Our Performance Windows feature is a good example: it recommends a daily workout window […]

Sleep debt: what it is, how it builds, and what it costs you

Contributed by Emma Tracy Most people treat sleep as something to squeeze in around everything else. You stay up late, wake up early, and tell yourself you’ll catch up on the weekend. But sleep isn’t a flexible resource, it’s a biological necessity. The gap between how much sleep you need and how much you actually […]