SwimMirror on Instagram: "Gain a clear understanding of how swimming engages and strengthens key muscle groups to enhance performance and overall fitness. What you’ll learn: • Primary muscles activated in each stroke: freestyle, backstroke, breaststroke, and butterfly • The role of core muscles in stabilizing and improving efficiency • How upper and lower body muscles contribute differently to propulsion and balance • Benefits of swimming for muscular endurance, flexibility, and injury preventio