Your body temperature follows a powerful circadian rhythm that determines how you wake, focus, and recover. In this article we explore the science behind morning warmth and cold exposure, revealing...

Caffeine and theanine are compounds found in tea but have very different effects on our brains. Caffeine is a well-known stimulant that increases alertness and reduces fatigue, while theanine is...

Remember that your ‘need’ for caffeine, a stimulant, is mainly driven by your ‘need’ for sleep.Also, your ‘need’ to use a depressant such as alcohol before bed is often driven...