Which is the best aerobic plan

Walking. Walking is one of the simplest and most available aerobic exercises.

Cycling. Cycling is another type of aerobic exercise with wide appeal and value

Swimming Activities.

Jogging, Aerobic Dance.

Explanation:

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