Biking Physics
My friend and I have recently started street biking, and we have a little disagreement - he thinks it is more work to sit down and pedal rather than stand up. I say standing up just uses more muscles of the body rather than isolating quads, but he says that standing up is easier because you're simply using gravity to push the pedals. I don't think that's consistent with physics, but I want to see if anyone has any conclusive explanation to end this disagreement.