How often should you use deep relaxation breaths

For me, I have to do it quite often. But a for anyone else. It may be due to stress or anger and they may do it 4 or 5 times a week or, the'll do it to calm themselves. It may take a few breaths it may only take one. It all depends on the person. 

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.