Muscle atrophy is the loss of muscle mass and strength, often resulting from disuse, aging, or medical conditions. When muscles are not used regularly, they can shrink and weaken, leading to decreased physical performance. This condition can occur in individuals who are bedridden, have limited mobility, or suffer from diseases like muscular dystrophy. Preventing muscle atrophy involves regular physical activity and strength training. Engaging in exercises that target different muscle groups helps maintain muscle size and function. In some cases, physical therapy may be recommended to help individuals regain strength and mobility after periods of inactivity.