C is for Cycling

OK, OK, I know. It's really BI-cycling. The pros to this activity include physical fitness, or at least fitness sufficient to ride a bike. How far you go depends on you. Tour de France fitness requires pro-level bike handling skill (like jumping your bike over a gutter at 50kmh, or simply riding in the middle of a 200-rider strong peletonwithout freaking) plus fitness specificity. To get that requires about 10-15 years of consistent high-level effort and commitment, great pain management, enormous motivation and a love of pasta. Plus about 700km a week, week in, week out.

To ride around and enjoy yourself is a lot easier.