The Ms.Fits, a group of friends and co-workers from the University of Iowa, are gearing up to begin the 100-day Live Healthy America challenge! PDQhealth will be covering their progress and posting their comments. The nationwide program, with teams in 47 states, encourages participants to be more active, eat a healthier diet and–for those with some weight to lose–shed pounds. Teams compete in two categories: accumulated minutes of activity and pounds lost. Check in with PDQhealth for regular updates.

Researchers don’t really know why we sleep. But they do know that sleep deprivation takes its toll. Recent insights add startling new reasons to get to bed early tonight.