If jason wants to build muscle mass in a healthy way, what kind of exercise should he include in his fitness program?
select one of the options below as your
a. aerobic
b. anaerobic
c. cardio

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there