Muscle atrophy is the wasting (thinning) or loss of muscle tissue. People may lose 20 to 40 % of their muscle and, along with it, their strength as they age.Have you ever noticed that people have thinner arms and legs as they get older? As we age it becomes harder to keep our muscles healthy. They get smaller, which decreases strength and increases the likelihood of falls and fractures.As we grow older, our skeletal muscles tend to wither and weaken, a phenomenon known as "sarcopenia". Sarcopenia, which begins to appear at around age 40 and accelerates after 75, is a