Muscle Retention Insights

Muscle fibers can grow and split through consistent resistance training, leading to a greater number of fibers that remain even when muscles shrink. Consistent lifters need not worry about losing muscle quickly, as the body prioritizes glucose and fat for energy before tapping into muscle stores. Illness and inactivity are the primary culprits for muscle loss, while endurance activities and prolonged fasting can also signal the body to reduce muscle mass.