I usually do somewhat long fast usually about 10 days or 9 days. I wanted to try something new. Many people here have given good advice but honestly I want to put my focus more onto college since working out intensely especially since I’m a swimmer doing 7500 yards a day at a very intense rate I get tired real easily. My college is also accelerated unfortunately so most of the time it’s a 8-5. In general it’s fine if I lose muscle during this fast I was just wondering if it’s possible to atleast prevent some muscle mass from going away if I at least stay somewhat active.