Sleep is considered to be one of the four pillars of health by yoga’s holistic sister science Ayurveda, alongside diet, meditation and exercise. Getting good quality sleep (meaning that you pass through delta brain waves and REM sleep) at the right time (overnight) ensures that your body has the opportunity to regulate hormone cycles and regenerate energy, while your mind can recover from the day and filter out non-essential information. All of this sets your whole physiology on track for optimal productivity and creativity tomorrow.