Definitely +1 for Mountain Biking. I was always the jock type (basketball, football, snowboarding, etc.) until my 30s when the injuries started piling up and sitting around waiting to recover drove me stir crazy! Mountain biking and guitar were adaptions that can be traced back to the rehab process. Mountain biking originally started as a way to strengthen the legs and lungs but it quickly turned into my #1 passion and ultimately another way to put my body at risk.
I started playing guitar about 8yrs ago as a way to pass the time while my body was at rest and now I wonder how it's possible I never thought of playing an instrument sooner! For years it seemed like we all rode bikes, but I'm 40 now and have got much better at the music thing, and over the last few years I've made tons of new music playing friends. Musicians and mountain biking sometimes seems like an odd fit but I love it and we have a lot of fun. San Diego is where I call home but California, Oregon, AZ, NV, and UT is where I roam. My wife, my friends, and I love to spend weekends camping and ripping sweet trails. Now that I've got enough time on the 6 string, it gets invited to come along too. Makes me happy.