British scientists have figured out the best way to carry babies.

The study involved nine women and six men. They had to walk one kilometer along a forest path under different conditions. The first time without a load, and then - with a baby in a baby sling on the side, front and back. It turned out that it is easier for women to carry and hold children than for men. The most energy efficient way to carry is on your back. So the parents did not lose speed.