Science must be used to figure out the correct weight, length, and what material it is made out of to be the most successful at its job. Technology must be used to make sure that the calculations are correct and to use a 3d printer or something like that to make it, that or robots/tools.
Pulsing I believe is the answer you might be looking for
Muscles are connected to the bones through tendons
You experience an increase in the level of body fat and a decrease in muscle mass tooo
Running. D, I was going to put down, A, but D is most logical as well.
