Hard work at too early an age stunts the growth.
5.

Bad positions and tight or poorly-fitting clothing are common causes of flat chests, round shoulders, and other deformities.
6.

Tight or high-heeled shoes deform the feet and make the gait awkward.
7.

The bones may be easily broken or put out of joint, or the ligaments may be torn by rough play.
8.

Alcohol prevents healthy growth..