no matter my fitness level i've always been one of the sweatiest people i've ever met. Hasn't stopped me from cycling, and i'll echo the above sentiments: i feel more awake when i get to work and better for the rest of the day if i bike to work. I do take steps to make sure I don't smell: shower either immediately before leaving, or even better immediately on arriving when work has a shower onsite.

Not an issue as long as you shower regularly. I arrive at work sweaty but dry off within about 10 minutes in the air conditioned office.