I've taken 1.5 years worth of sabbaticals since I graduated 6 years ago. Can't recommend enough especially if you want to learn, build side projects and take better care of your health!
Where do you work that this is possible? I graduated recently and my employer is pretty generous and flexible with vacation time, but I can't imagine asking for several months off just because I feel like it.
Probably just quits and comes back to (a probably new) employer in a few months or is self-employed. I took 9 months off of work, I wouldn't call it a sabbatical but you could phrase it that way I suppose. Funemployment.
That does sound nice, but a sabbatical usually means you're at least partially paid and you continue your old job when you come back. Also, I don't think I know anyone just out of college who could afford to do that.
I heard Intel lets some people take a short sabbatical after 10 years of employment. 1.5 years after 6 years seems unbelievable. I've personally never seen a company that allows sabbaticals in my 15 or so year career.