Drinking coffee daily may lead to shallow sleeping, according to a new study which warns that caffeine can weaken brain activity linked to recovery and rejuvenation.
A growing body of research shows that the quality of sleep matters more than the duration, especially for the brain. Studies also reveal that slow brain waves are a key component of “deep sleep”, the phase responsible for physical rejuvenation and proper cognitive function. Caffeine, the new study suggests, may negatively affect deep sleep.
