What: Day napping is generally considered a healthy habit, improving performance, and making up for “sleep debt”. However, a new meta-study of over 300,000 participants found that long naps (>60 mins.) were associated with a 30% greater risk of all-cause mortality and a 34% higher likelihood of cardiovascular disease when compared to the cohort that did not nap.
Takeaway: If you want to take a nap, it’s probably safest to keep it under an hour. For those not in the habit, there’s no convincing evidence to start.