Muscle loss, also known as muscle atrophy, occurs when the body loses muscle mass and strength. This can happen due to various factors, including aging, inactivity, or certain medical conditions. When muscles are not used regularly, they can shrink and weaken, leading to decreased physical performance. In older adults, muscle loss can significantly impact mobility and overall health. Conditions like sarcopenia are common, where muscle mass declines with age. Maintaining an active lifestyle, including regular exercise and proper nutrition, can help prevent or slow down muscle loss, promoting better health and quality of life.