Everyone is different. Some people are very outdoorsy and do all the hiking, fishing, jogging. Some people enjoy indoor activities like playing video games, playing cards, reading. Some people like to do absolutely nothing productive and just watch tv. A number of younger men/teen boys are into skate boarding and trick bike riding, or riding dirt bikes. Cars is also a big hobby for some guys, working on cars, making them faster, racing. Some girls take interest in classes like yoga and pilates, while some girls like the more masculine things like dirt bike riding. Girls also take more interest in shopping, and just hanging out at the mall with friends, going to get their nails done together. I think most people are more about relaxing and doing something they enjoy rather than necessarily self-improvement.
Yes. All of the above. There is a cliche about America being a nation of 300 million individualists, and while it isn t completely correct it also isn t wrong.