Its not C. You would think it would but its not. I feel like its A or B.
1. helps improve or maintain overall health
Yes. Jump-roping is a cardiovascular exercise.
Well I do not know what activity you chose but warming up your muscles before and workout helps loosen them up and help reduce straining and tight muscles during physical activity. Doing a cool down is the same as warming up. Cool down loosens up the muscles since they have been worked and stressed during an exercise.
Hope this helps!
