It's no secret that getting too little sleep causes fatigue and a host of bodily ailments. Recent studies have started to look at the affects that poor sleep has on the mind in addition to the body. Their conclusions: Aim for an average of 6-8 hours of sleep per night. Less than 6 hours could increase your risk of dementia, and more than 8 hours could increase your risk of Parkinson's.

I've been tracking my sleep with a Withings Sleep Tracking Mat since July, and my average weekday sleep is 6h50m and my average weekend sleep is 7h55m, so it seems that I've naturally fallen into that sleep sweet spot. I still don't feel entirely rested on less than 7 hours of sleep, so my goal is to gradually increase my weekday average to 7h30m.