If you sleep in on weekends to catch up on lost sleep during the week, you're not alone. Up until now, the scientific evidence supporting the benefits of this practice have been limited, but new research from Chinese scientists seems to prove the health benefits of catching up on sleep. The study, presented at this year's European Society of Cardiology Congress, used data from 90,903 subjects to examine the relationship between compensated weekend sleep and heart disease. Sleep depriv...