Back muscles. Lie down flat on the floor face down. Place your hands on your back, and slowly get up as far as you can. Breathe out when you get up, and breathe in when you lie down again. Keep your eyes on the floor. We do this exercise 20 times.
Stomach muscles. After the last exercise, we turn around and lie on our backs face upwards. Grab your partner and take place opposite him. Take a ball and throw it at the moment you clench both stomach muscles and get up. If this goes well, we increase the tempo