Interesting. My college track coach expressed it as social, grades and running: pick 2. Sleep is a requirement or all the rest inevitably fall apart.<p>Personally I think fitness is not as time consuming as many people make out. I run 5 to 6 hours a week total clocking 40 to 50 miles. Granted running is probably one of the more time efficient forms of training... It&#x27;s all about minimizing friction for me: run from home or work instead of driving somewhere and choosing my running time to minimize time spent in traffic. It helps a lot that my spouse is also a runner and many of my friends are so that takes care of much if the family&#x2F;social part...<p>So 6 hours out of my 112 waking hours does not seem impossible. And most people could cut that in half and stay in decent shape.