>I tried it, (ten kilometer commute on a bicycle) and a month after I stopped it I was back to what I had been previously. Nothing gained.
You might've pushed too hard then, or perhaps you hate biking, which is fine. Did you commute to work and back as part of it? If so, I'd hazard a guess that that's why you might've hated it.. if I had to run to work I wouldn't feel rewarded. My opinion is that you should find something that you like. Try running, swimming, yoga, anything.
With respect to your second point... your whole body is not your mind, and it is prone to atrophy; it's biology and that's how it is. If you stop coding for a long period of time(or stop learning, for that matter), your abilities there will diminish too.
You might've pushed too hard then, or perhaps you hate biking, which is fine. Did you commute to work and back as part of it? If so, I'd hazard a guess that that's why you might've hated it.. if I had to run to work I wouldn't feel rewarded. My opinion is that you should find something that you like. Try running, swimming, yoga, anything.
With respect to your second point... your whole body is not your mind, and it is prone to atrophy; it's biology and that's how it is. If you stop coding for a long period of time(or stop learning, for that matter), your abilities there will diminish too.