Which muscle fibers are best suited for activities that involve lifting large heavy object for a short period of time

Anaerobic, fast twitch muscle fibers or white fibers as they provide large amounts of power over a short period of time

Both sexes because it is always romantic

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.