Muscle mass begins to decline after age 30 at a rate of 3% per decade. It seems to be a trifle and at this age is completely invisible. After 50, muscle loss is about 1% of skeletal muscle mass each year and upon reaching the age of 60, this process accelerates significantly.
Even more annoying, there is less muscle and more fatty tissue. Between the ages of 30 and 60, the average person annually loses 0.5 lbs (0.23 kg) of muscle and instead...