I’m not talking about him, but about your beloved morning cup of Joe. What’s wrong with my morning Joe? I’m drinking it black so it has no calories. Here’s the rub: it interferes with your sleep. And there’s a growing body of evidence, no pun intended, indicating that sleeping less can lead to weighing more.
Nine healthy young men, who regularly drank one or two caffeinated beverages a day, consumed 200 mg of caffeine at 7:00 a.m. and had no more caffeine for the rest of the day. (As a point of reference: a 16 oz grande brewed coffee at Starbucks has 330 mg of caffeine)
On the mornings the young men had the caffeine, their sleep was affected 16 hours later when they went to bed at 11 p.m. It took them 11 more minutes to fall into a deep sleep, and their total sleep time averaged 10 minutes less than on a night when they consumed a placebo in the morning instead of the caffeine. (Brain Res. 675:67, 1995)
Does ten minutes really matter? Not for one day. But it does matter if it happens every night!