1.  It just feels better!  No constricting PJ’s to bind up during the night, just your skin against the sheets.  Your body temperature drops allowing a more restful sleep. 
  2. It’s good for the privates.  For women, it allows your vagina to cool down from the day; important to prevent yeast infections.  For you guys, your testes are able to cool down which keeps your sperm healthy and your reproductive system cranking.
  3. It helps to keep your cortisol (the stress hormone) in check.  Your cooler body temperature and more restful sleep keeps your cortisol production at normal levels.  Too much cortisol can cause weight gain, decreased immunity response, high blood pressure, loss of bone density and the list goes on.
  4. Melatonin and growth hormone release is invigorated as you slumber.   The anti-aging hormone generated has a positive effect on your skin and hair.
  5. Of course, if you are sleeping with a partner, skin on skin feels way better than flannel on flannel.  Good for the sex life and saves on the clothing budget.