Do you struggle to build every little pound of muscle in your back? (directlyfitness.com)
One pound of muscle burns about 60 calories a day just to sustain itself, while one pound of fat burns around 15 times less — about 4 calories a day. (fitnessandpower.com)
Unfortunately, after age 35, you start to lose about a half pound of muscle per year if you're not actively replacing it. (verywellfit.com)