By: Rory J. O’Connor

Science Opens Its Mind to Psychedelics
Alongside the latest self-help books on making yourself trimmer, stronger and smarter is one whose unusual subject has made it a best-seller: mind improvement using psychedelic drugs.
Social Media: Group Power for Fitness and Health
Bring the competition or the cheer squad? There’s an app for that.
Can You Design Better Sleep?
Find out which devices might be helping—and when they might not.
Who’s Tracking Whom?
There’s a chance some of your health data could be shared more widely than you thought.