How quickly do you lose muscle mass? I'm seeing a pattern with my weight. On weekends I rest and let myself have one cheat meal. Despite not working out and extra calories I lose 2-3 pounds and then Monday-Wednesday I gain or stay flat. By friday I'll drop 2-3 pounds again.
Can my weekend weight loss be lost muscle mass? It would explain why I gain once I get back to working out.
No, you body fluctuates in weight around 5 lbs a day sometimes, depending on several factors like when and what you eat. No way you drop muscle mass like that over the weekend, you'd be dead or Justin Bieber.