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Bare skin is slicker than hairy skin, so shaving arms and legs will reduce air drag by a tiny amount for a cyclist.

Shaving one's legs does not actually reduce the aerodynamic resistance on one's body. It is, however, advantageous in the treatment of cuts and scrapes ("road rash"), reducing the amount of dirt stuck to one's legs, as well as keeping one's legs cooler then if they were hair covered. Mountain bikers may shave for said benefits as well as greatly reducing the chance of attracting ticks.

Regardless of quantifiable benefits, leg shaving has been shown to produce significant placebo effects, that is, a cyclist with shaved legs tends to perform better simply because he believes he has a significant advantage.

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Q: How does shaving reduce drag?
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How does a swimmer reduce drag?

Shaving his head/wearing swim cap, shaving body/facial hair, wearing speedo.


How do you get rid of acne or raised spots on your genital area?

This is very likely a reaction to shaving. Changing to a milder shaving soap, a better shaving system and thourough rinsing before and after will reduce this reaction. A skin conditioner applied after shaving will also help. Shaving in the direction of the hair not against it will reduce the damage to the surrounding skin.


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