Đẩy tạ lưng hướng gồm có mấy giao đoạn ?

After a long conversation with my father, i learned to take my responsibilities more seriously.hope this : )

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other. 

By placing 2 fingers at the sternum (the spot where the lower ribs meet) the put the heel of your other hand next to your fingers. hope this