Deep sleep, or slow-wave sleep, is essential for physical tissue repair, growth hormone secretion, and the clearance of metabolic debris from the brain. To optimize this stage, avoid alcohol, caffeine, and cannabis within 8 to 12 hours of bedtime, as these substances significantly disrupt sleep architecture. Refraining from eating large meals within two hours of sleep further facilitates growth hormone release. Engaging in 60 minutes of moderately intense cardiovascular exercise at least six hours before bedtime enhances slow-wave stability. Supplementation with 900 milligrams of myo-inositol, alongside magnesium threonate, theanine, and apigenin, can assist in falling and staying asleep, particularly for those on low-carbohydrate diets. While tracking devices provide estimates of sleep stages, prioritizing a consistent sleep duration of seven to eight hours remains the most reliable method for ensuring adequate recovery and long-term health.
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