re: What hobbies do you do by yourself?

Where do you live, what kind of shape are you in, and how much money do you have to spend on hobbies? Are you outdoorsy?

I think you should choose hobbies that make you healthier and happier. That rules out stuff like gaming and gambling or watching TV. I like kiteboarding, but that requires decent health, fitness, and financial wherewithal. Also, the wind doesn’t blow when you want it to. Mountain biking is fun and is great exercise, and trails usually exist not too far from most locales.