San Francisco County is lifting its mask mandate for some businesses. The New regulation is effective today. At Fitness SF masks are OPTIONAL for People who are Fully Vaccinated with a Booster. People who are Vaccinated but not eligible for a Booster yet. Masks are REQUIRED for people who are vaccinated and are eligible for a Booster but have not received the shot yet. Gleidson Martins, visited the gym to see how members and staff are dealing with the mandates.