The crunch
Target muscle: upper straight abdominal muscles
Repetitions: until exhaustion
Number of sentences: 3 - 5
Movement execution: slowly
The starting position
The knee joints are at a right angle and the view is towards the ceiling. The hands are on the sides of the head. The upper body lies flat on the sleeping mat.
The end position
The upper body is lifted off the sleeping mat. The vertebrae of the spine are unrolled one after the other.