Sleeping-in is fine but if you sleep too long, it throws off your body rhythms during the following day.

It is better to go to bed earlier. Daytime naps are an interesting phenomenon. They can be valuable if they are short and timed properly (i.e., not in the evening).

The "power nap" or catnap is a short sleep (five to 20 minutes) that can be rejuvenating. A nap lasting more than 30 minutes can make you feel groggy.

Patients with insomnia should be discouraged from daytime naps. Beyond these cautionary notes, sleep can be key in reducing stress and helping patients cope and function better.

Any more suggestions?