The curve is more than just an aesthetic feature - the arch forces the water to press downwards against the dam.
它的曲线不仅具有美学特征，它的拱门更是将水流压向水坝的下方。
2
Gradually add more body weight over the foot, allowing the ball to press into your arch. Begin to slowly move your foot, allowing the ball to massage your heel, forefoot, and toes.
身体的重量会慢慢移到脚上，让球按摩你的足跟，脚前部和脚趾。
3
Press down on the mat with your hands, gently increasing the arch in your back.