Performance
An elite-sport sleep coach turns circadian cycles, naps, travel, environment, and scheduling into a practical recovery system.
The author argues that sleep is better planned as roughly 90-minute cycles than as a single eight-hour block each night. He aims for around five cycles across a 24-hour day. On his view, fixating on an hours target is part of what keeps people from resting well.
Recovery is treated as something you program across a whole week, counting cycles, rather than something you pass or fail each night. In this approach a short night can be balanced by planned recovery elsewhere in the week. The author is clear that such recovery supplements lost sleep but does not fully erase it.
The author says the body has natural low points: deepest sleep around 2–3 a.m., mirrored about 12 hours later in the afternoon slump. He treats that early-afternoon dip as a planned window for a nap. He claims naps can lift memory, performance and mood, a rhythm modern schedules mostly dropped.
Darkness builds melatonin, the hormone that readies you for sleep. Daylight suppresses it and drives the chemistry of waking alertness. So the author advises dimming bright light in the hour before bed and getting natural light in the morning.
The author sorts people into morning and evening types. Evening types reach their deepest sleep a few hours later than morning types. Adolescents have delayed body clocks and generally need more sleep, so one fixed schedule will not fit everyone.
The author holds that waking during the night is natural and not something to worry about. He argues that people who understand and value their own sleep feel more in control of it. They can then limit the damage when a night goes wrong, rather than spiralling over it.
The author says changing the sleep environment and schedule does more than measuring sleep with trackers, whose accuracy he calls questionable. His practical levers include a cooler rather than cold room and well-chosen mattress and pillows. He also points out that a 'double' bed is only half again as wide as a single, so it is really sized for one.
After stress and worry, the author names a partner's disturbance as the most common thing that breaks sleep. This makes bed size and sleeping arrangements matters of recovery, not just comfort. He recommends lying on the non-dominant side in a curled-up position.
The author times eating to the cycle schedule, with the last meal about two cycles (three hours) before sleep. He treats caffeine as a deliberate performance tool kept under about 400 mg a day, not a habit. Diet and exercise are part of the same sleep plan.
The author treats a consistent wake time as the fixed point of the schedule and plans sleep backwards from it in cycles. This keeps the routine steady even when bedtimes slip.