Will i lose muscle if i don't eat enough protein for 3 days?

You will lose muscle mass. Protein is responsible for the growth and maintenance of our muscle mass.

Will i lose muscle if i don't eat enough protein for 3 days?

You will lose muscle mass. Protein is responsible for the growth and maintenance of our muscle mass. So, if you don't get enough protein, you can start to lose muscle mass. This can be especially problematic because as we age, we naturally start to lose muscle mass.