Do swimmers shave off all their body hair ie completely hairless everywhere or do they leave they pubic hair are there any swimmers who can tell you?

Do not shave off every single strand of body hair. You may shave your arms and legs; your private area, and your underarms. When you shave your arms and legs, do note that note every strand of hair will be cut off. But it is better to leave some. If we were born with body hair, it must be for a purpose, right?