Bike Ride - what hurts.

Just rode my bicycle for 3 hours and 15 minutes. I was riding up hills, around old people, through groups of moms and their strollers, and keeping up - ever so briefly - with guys who are actually in shape and have been on a bicycle more than once.

My thighs burned, my lungs felt like a furnace. But when I was all done and laying in the backseat of my car, do you know what hurt the most?

My nipples.