A scheduled activity in which two or more short and unhealthy men get together on a weekly basis for sexual contact. The activity is usually associated with small social circles online that receive very little attention. Weekly sweats usually take place in gym saunas, which is why those who attend weekly sweats will not see an improvement in fitness while claiming to regularly go to the gym.
Man 1: "Hey are you coming to the weekly sweat?"
Man 2: "You know I never miss a good sweat!"