10 Ways to Reset Your Sleep Cycle By Camille PeriWebMD Feature Travel, shift work, or even a few nights up worrying can upset your sleep. They can throw off your circadian rhythm, the internal clock that controls when you sleep and wake. You don't have to take sleep problems lying down.
Heart Attack, Stroke More Common in Shift Workers Study: Shift Workers at Greater Risk for Heart Attacks, Strokes July 26, 2012 -- Working the night shift or any non-traditional schedule may increase your risk of heart attack and stroke, a study shows.
Drea McLarty, a 35-year-old mother of two, awoke before dawn to run nine miles on a recent Monday, then made breakfast for the family, did some errands and headed to the park for an hour of Pilates. Later that afternoon, she had a personal training session with a client.