Answer:
True
Explanation:
Jump roping can be very effective in conditioning and strength. Jump roping is a very helpful cardiovascular exercise. You're really exercising a complex system of muscles. You're not really isolating one muscle. You're exercising your upper body, core and lower muscles all in one action
He said his own opinion and not everyone did that, so he drawed attention.
Early Human being when they accidently rubbed two stones together
