If i told you there exist a supplement will make you fitter, slimmer, healthier. It cost almost nothing. Moreover, it helps prevent cancer and cardiovascular disease. Even better, it helps you learn things faster, become more intelligent and might even prevent alzheimer. Would you be interested?
This supplement is widely available and it’s called: sleep.
Give yourself the gift of sleep. Go to bed early and at regular hours. Avoid alcohol and caffeine. Eat well. Move enough during the day.
And here is a lesser known but potentially effective idea: Lower light intensity in your house and/or wear sunglasses 2 hours before bedtime.
If you are interested in the subject, here are 2 good books:
Why we sleep by Matthew Walker.
Vaincre les ennemis du sommeil de Charles Morin
Martin Pham Dinh 