How did ancient grapplers avoid skin infections?

It’s pretty much common knowledge that grapplers are very prone to skin infections if they’re not diligent with showering and overall hygiene. That makes me wonder how grapplers of the past dealt with that issue. The world wasn’t nearly as clean as we are today and germ theory wasn’t really known until the 1800s. Even showering wasn’t common place until the early 1900s. I know the ancient Greeks wrestling under a mid day sun on sand must been like heaven for staph infections. Were there methods they used to avoid such problems?