You probably don’t need 8 hours of sleep for a healthy brain

Largest analysis of brain scanning data yet suggests concerns about getting 7-to-8 hours sleep a night are overblown

​Largest analysis of brain scanning data yet suggests concerns about getting 7-to-8 hours sleep a night are overblown Largest analysis of brain scanning data yet suggests concerns about getting 7-to-8 hours sleep a night are overblown