I do quite a few of those things. I still get quite bored with them. :) Biking to work only works for me because it becomes an obligation. And, if I had my bus pass with me, I would easily take the bus on more days than not.
Also again, my point was that getting good at exercising is getting good at a relatively quiet mindset that many people deprive themselves of. So, I believe there to be a feedback loop between the two ideas.
