Hey, just read your thread. I'm 45 and I'm a bike courier who commutes 11 miles to work, then deliver by bike all day just to ride home, 5 days a week 52 weeks a year and on the wkd's, my wife and I hook up a trailer and go grocery shopping about 6 miles from home round trip. Your prof. definetly needs to get out more. Anyways good luck with your studies.