Characteristics of pupils' opening and closing jumps
The flexibility of boys is not as good as that of girls, and the coordination and flexibility of girls' limbs are better than that of boys, so the standard of girls' opening and closing jumps is higher than that of boys. Grade one students can jump 10 to 50 times a minute, because the coordination ability of grade one children is not so strong, and the speed of grade one children is relatively slow.
First-year students have just started to practice opening and closing jumps. Some children with poor coordination can only jump more than a dozen children with strong coordination and athletic ability in one minute, and they can also jump to near 100 in one minute. Opening and closing jumps can enhance the muscle movement ability of legs, effectively exercise abdominal muscles, effectively consume a lot of calories, make the heart rate increase rapidly, exercise the muscles of hands, shoulders and legs, and improve the fat burning rate.