Why Do You Shave for Swimming?

The world of swimming can be highly competitive, with only a few short seconds separating first and last place. Swimmers use a variety of methods to improve their times, from exercise strategies such as tapering, which is reducing practice before a big match, to special diets. One such method that supposedly decreases times is removing body hair, usually by shaving. Swimmers may shave their legs, backs or entire bodies to help their speed.

  1. Speed and Laminar Flow

    • When swimmers remove the excess hair from their body, they aim to reduce drag and smooth the water's path over their body. In theory, water catching on hairs slows down the swimmer in a process called laminar flow. The diversion of the water into eddies and ripples acts like friction, adding resistance. Wetsuits and swim caps also aim to minimize the effect of laminar flow on hair.

    Tactile Sensation

    • Another benefit of shaving for swimmers is psychological. By removing the hair and the outer layers of dead skin, a swimmer renders his body more smooth and sensitive. The feeling of being extra slippery in the water may give an athlete the added confidence to succeed in competition.

    Shaving Tips

    • For the best shaving experience, use cream or gel, warm water and a sharp razor. Avoid shaving very long hair. Instead, clip or trim it first to ease the process. Shaving against the grain may be painful, so begin with a first pass in the direction of the hairs' growth. Don't apply lotion after shaving, as this can both cause discomfort and destroy the increased sensitivity that swimmers prefer.

    Efficacy of Shaving

    • The science behind the shave remains controversial, with no certain conclusion. Some studies suggest that shaving may reduce a swimmer's time by a second every 50 meters, while other studies report the benefits as an illusion or placebo effect. Ultimately, the psychological push from feeling slipperier might encourage swimmers to shave, even if the physical advantage is nonexistent.