It's exciting for a mother to feel her baby kick for the first time, but a new study reveals those kicks can exert more than ten pounds of force.
Imperial College London researchers analyzed 20 women who had MRI scans at 20, 25, 30 and 35 weeks into their pregnancies. They tracked fetal kicking and joint movement. They found fetal kicking strength peaked at 10.5 pounds, or 47 Newtons, 30 weeks into pregnancies. The strength of the kicks dropped down to about 3.8 pounds, or 17 Newtons, by 38 weeks of pregnancy, likely because the babies' have less leg room at that point.
It's believed the force of those kicks stimulates the development of babies' skeletal tissue. (Daily Mail)