The More You Do, The More You Do.

I had four weeks off and I sat on my arse and didn't fuck all. Nothing. Niente. Nada. Now that I am back at work, I am walking for an hour every night after work. I had all day every day for four weeks and I didn't move a muscle. Now, working a full day, I'm straight out the door after I get home - after I have had a cup of tea and some vegemite toast, of course - headphones on doing my hour long circuit. It doesn't really make sense. 

The more you do, the more you do.

Is this just me, or does everybody do this?