I have a back problem which means that I get up before 6am most mornings -- I either go to work a couple of hours early if there is a deadline to be hit (as there is at the moment), or I catch up on web and email and\or watch a film. Occasionally, in the summer, I'll go out and do a bit of (quiet) gardening.
I quite like getting something done before going to work -- makes the day seem much more full.
Herbie