Sandra's target heart rate zone is 135bpm—172bpm. marissa's target heart rate zone is 143bpm—176bpm. they stop playing basketball and take their pulse, and both count the heart rate at 144bpm. if they decrease their heart rates by 20bpm, who will be in her thr zone?

Neither will be in their target heart rate zone if they decrease their heart rates by 20bpm because they will both be at 124bpm- below their target heart rate zones

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.