The answers is bites from infected insects
There are five areas of health related fitness. They are heart and lung endurance or cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. Heart and lung endurance or cardiovascular endurance is the ability to exercise the entire body for long periods of time.
It means they are healthy if they nose it's wet it means he/she is sick
Bc most men are too embarrassed to let people know they have it or go to the doctors to treat it