Medical / Physical reasons why a bald man SHOULD have an advantage when walking
1. Less weight on the head = more overall speed
2. Less air resistance = more speed
3. Less likely to sweat = less dehydration = able to walk longer distances without getting thirsty
4. Androgenic hair loss pattern = more testosterone = Qawi. Each step has extra strength which leads to increased distance.
5. Aerodynamically more stable. More hair on one said may lead to shift of balance on one leg, slowing down overall speed.