Also, yoga. It's ubiquitous, you can start small, and although you may, you don't have to interact with people so it's a great stepping stone for a shy person.
Sure a high chance of meeting women (which is nice if you don't want to be Forever Alone), but other than the ability to strech a little more what is the gain?
It's excercise like any other, it's just using the body's own weight instead of dumbbells to create load. Stretchin is a lesser part of yoga than strength.
Sure a high chance of meeting women (which is nice if you don't want to be Forever Alone), but other than the ability to strech a little more what is the gain?