a. Crunches
a. 仰臥起坐
Crunches are versatile workouts providing the correct tensile flexibility to the abdominal muscles. Lie downon the floor with your knees bent and hands behind your head. Lift your body to touch your head to yourknees. This exercise targets the upper and middle abdomen. Doing the same on your sides will helpenhance the oblique muscles.
仰臥起坐是非常通用的鍛煉方式,能為腹肌提供恰當的拉伸彈力。屈膝平躺在地上,用手從背后抱住頭。然后起身讓頭靠膝蓋。這個訓練主要鍛煉腹肌的上部和中部。往身體兩邊做仰臥起坐可以鍛煉斜肌。
n. 消散;浪費;損耗