The occasional catnap is typically OK—but if you're frequently tired, it's high time to assess your sleep routines.
Anything less than seven hours a night increases your risk of developing a variety of health problems.
Daytime snoozing may increase the risk of hypertension, but expert says there's more to it than that.
An afternoon siesta lowers blood pressure and is linked to better heart and vessel health.
Can a power nap really help counteract a short night?
