And finally; the disadvantage: opportunity cost
there are 168 hours in a week. With most people spending 1/3 of that asleep (56hrs, 8hrs/night), 20 hours on lesswrong per week, 40hours in an average work week, before we take two hours out of each day to spend exercising (14hours); what are we taking those hours away from? Can you do what you were doing before without the time spent exercising here?
Note that exercising affects your need to sleep, so more minutes spent exercising don't necessarily translate to fewer minutes available for other stuff on a one-to-one basis.
But there are two contrasting effects here -- by exercising, you'll need to sleep more, but you'll also get more hours of actual sleep per hour spent in bed trying to sleep -- and it's not obvious which one will dominate. It probably depends on lots of things.
But there are two contrasting effects here -- by exercising, you'll need to sleep more, but you'll also get more hours of actual sleep per hour spent in bed trying to sleep
I'm not sure whether that's true. Dancing well can in my experience mean sometimes mean that I get by with less sleep.
The question is - am I doing enough exercise?
I intend to provide a worked example for you to work alongside with your own calculations and decide if you should increase or decrease your exercise.
The benefits of physical activity are various and this calculation can be done for one or all of them; some of them include: