there is no such thing as a bike 'marathon'
if he doesn;t have a lot of saddle time, he will be very sore in the butt, and that might be the thing that makes him quit before it;s over
if he isn;t very fit, he won;t be able to pedal for 6-9 hours
weak knees, probably won;t matter
wle.
not knowing your weight or age or how fast you were riding or average heart rate--
35 calories per mile
probably less than you thought
per mile is more meaningful than per hour
since for all i know you were going at walking speed, which would use less calories than walking
wle.
are you racing?
or do you just -want- to look like a doofus?
you think shaved legs on a guy, won;t look weirder than hairy legs?
what about 5:00 shadow?
are you going to reshave every day?
dude..
wle
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wle.