Love it as you may, doing intense work for 120 hours a week (~17 hours a day) will burn you out. Just because I love running or working out doesn't mean I can s

Love it as you may, doing intense work for 120 hours a week (~17 hours a day) will burn you out. Just because I love running or working out doesn't mean I can spend unlimited time doing those activities and continue to improve productively; in fact one would burn out rather quickly. I believe there are aspects to intense mental work that are similarly physically demanding.