system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If skipping supposedly burns less calories than jogging, why doesn't anyone skip in marathons to conserve energy?
gpt
Skipping is horrendously difficult on your feet and legs -- 26 miles of skipping would destroy the arches of your feet, your knees, and give you the worst shin splints in human history. Much of the technique in a marathon is learning how to run in such a way to keep your feet and legs from wearing out or getting too sore.