Share Facebook Twitter LinkedIn Pinterest Email Keep your knees, hips, and lower back healthy with this exercise. As SilverSneakers Fitness Expert David Jack says: “Long muscles are strong muscles.” source Beginners cancercare Curl david jack Fitness guide Leg leg curl Seated seated leg curl Senior SilverSneakers 健康藻知道 抗癌食物 癌症 癌症治療 老人保健 老人健康檢查 老人健檢 老人肌力 老人運動 老人醫療 老人難吞嚥 褐抑定 褐藻 銀髮