“What piece of exercise equipment sells for under $20, fits into a briefcase, can be used by the whole family, and improves cardiovascular fitness while toning muscle at the same time? And using it for just 15-20 minutes will burn off the calories from a candy bar? The answer: a jump rope,” according to WebMD
WebMD: You’d have to run an eight-minute mile to work off more calories than you’d burn jumping rope.