Daniel, you must embrace bodybuilding, it is the only way that the human body can survive work in an office for long periods of time. Exist between two extremes, and you will be OK in the long run.
Carpentry would be fun as hell though. I donate my time (when I have it) to a group that repairs/renovates homes and sells them to low income buyers when they are finished. It's alot of fun and its for a good cause. I wish I could do it more often.