1. Fix Your Wake Time First, Not Your Bedtime
Every sleep optimisation plan starts at the wrong end. People try to fall asleep earlier without anchoring when they wake up. The circadian rhythm is regulated by a consistent wake signal, not a consistent sleep signal. Choose a wake time and hold it every day, including weekends. The body's suprachiasmatic nucleus, the internal clock sitting in the hypothalamus, sets its entire 24-hour schedule off that first morning anchor. A 2019 study published in Scientific Reports tracked 61 college students and found that irregular sleep and wake timing was associated with lower academic performance and disrupted melatonin and cortisol release patterns. The irregularity, not the total hours, was the problem.
