There is also a special null type, the type of the expression null, which has no name. Because the null type has no name, it is impossible to declare a variable of the null type or to cast to the null type.
Transcript of Muscles Used for Jumping Jacks! Muscles Used for Jumping Jacks! FONTS. Muscles of the Abdomen- Anterior View. Rectus Abdominus. : Helps stabilize the movement to create pressure through a jumping jack. Muscles of the Lower Extremity. Anterior View (leg)-.
The number of calories burned while doing jumping jacks depends on your weight. For instance, for a 120-lb. person doing jumping jacks for 10 minutes burns 76 calories. For a 150-lb. person, the same exercise burns 95 calories, while someone weighing 200 lbs. would burn 127 calories doing 10 minutes of jumping jacks. It is important that you follow proper technique when performing jumping jacks.