Achieving sleep isn't just about feeling tired; it's a physiological shift. A key biological marker for entering a state of unconsciousness is having a heart rate of approximately 60 beats per minute or lower. This makes heart rate a critical and measurable target for pre-sleep routines.

Improving sleep quality is one of the cheapest and highest-leverage investments you can make. Simple, one-time purchases like blackout curtains and earplugs can dramatically improve decision-making, energy, and recovery, yielding permanent benefits for minimal cost.

The meditation is framed not just for relaxation, but as a practical intervention to regulate the nervous system. This helps high-performers function better and with more peace by connecting a passive activity to tangible outcomes like enhanced daily effectiveness.

Scheduled thinking time acts as a mental clearinghouse, preventing unprocessed thoughts from racing at night. This practice improves sleep quality and reduces overall stress and anxiety, leading to calmer, more considered decision-making instead of knee-jerk reactions.

The ketogenic diet has a profound neuropharmacological effect, acting as a brain stabilizer. It reduces levels of the excitatory neurotransmitter glutamate while increasing the main inhibitory neurotransmitter, GABA. This quieting effect explains its efficacy in treating epilepsy and anxiety.

Bryan Johnson suggests focusing on a single metric: pre-sleep resting heart rate. Lowering it through specific habits (like eating 4 hours before bed) improves sleep quality, which in turn boosts your prefrontal cortex, enhancing willpower and alleviating mental health issues.

A prerequisite for falling asleep is shutting down proprioception—your awareness of body position. Performing slow, deliberate eye movements (side-to-side, circles) can trick your vestibular system into this state, helping a racing mind fall asleep.

The brain's glymphatic waste clearance system works best at night. Mark Burnett suggests taking his supplement in the evening and sleeping on an incline using a wedge pillow to physically assist this natural drainage process, potentially boosting the supplement's effects.

Contrary to popular low-carb diet advice, consuming starchy carbohydrates in the evening can significantly improve sleep quality. Carbs help lower cortisol, the body's stress hormone, which needs to be low at night for restorative sleep. This explains why many low-carb dieters struggle with sleep disruption.