People try to teach their kids chess cause think it will improve their grades. No one really knows exaclt the effects it surely works better than football.
There are a lot of hobbies that you can do. Making jewelry is actually an inexpensive and creative hobby which can prove to be rewarding.
People that work in highly intelligent fields tend to taake part in hobbies that follow a pattern. This pattern consists of only a few targeted hobbies as supposed to constantly switching.
If you are unsure about what kind of hobby you should do, the best way to find out what that hobby could be is to start trying a bumch of different things.