Matthew Walker, writing for The Guardian, says if you want to be healthy getting less than six hours of sleep a night should be avoided.

Routinely sleeping less than six hours a night also compromises your immune system, significantly increasing your risk of cancer. So much so, that recently the World Health Organization classified any form of night-time shiftwork as a probable carcinogen.

Inadequate sleep — even moderate reductions of two to three hours for just one week — disrupts blood sugar levels so profoundly that you would be classified as pre-diabetic. Short sleeping increases the likelihood of your coronary arteries becoming blocked and brittle, setting you on a path towards cardiovascular disease, stroke and congestive heart failure.

Looking at my Sleep Cycle stats, I average about seven hours and 15 minutes of sleep a night. However, my sleep quality is right at 75%. I wonder if I need to do something different with my sleep patterns?