I think the problem with trying to mix exercise with hobbies or commuting is that they don't really satisfy the same physical goals. Hobbies are for fun. Commu

I think the problem with trying to mix exercise with hobbies or commuting is that they don't really satisfy the same physical goals. Hobbies are for fun. Commuting is for travel. They may involve physical exertion, but they repeat the same movement patterns over and over. You don't exercise all your muscles. E.g rock climbing is hard but doesn't exercise any pushing movements. Which can become a problem when only one set of muscles is trained. Good exercise will not only make you fitter in a generally useful way, but help you fix problems like flexibility or posture. I.E we are trying to fix your weaknesses, not just cater to your strengths.