Catch this BBC programme while you still can, or download it. This programme talks about how to get the most out of your body. They discuss sleep, work, exercise, cancer treatment, the effects of alcohol, eating, diabetes…and sex (warning: a bit of nudity and sex in this bit, and scenes of childbirth and breastfeeding). Learn how to control your bodyclock by getting light at the right time of day so you can become more of a morning person, or stay asleep later if you wake too early. Amazing.
This is especially informative if you have teenagers…and another good reason to homeschool.