This is just an example. You can fill in your own hobby. I got involved with playing guitar 3 years ago and I now go to an old -time guitar roundtable on Tuesday nights. Frequently, we also have things going on other nights of the week including weekends. It is all on how much you want to involve yourself. I have a blast.
I also run/exercise. I know there are groups that meet for running pretty much every day of the week around my area.