The kid wants to be on pens. All you need to know about physiological carrying

The kid wants to be on pens. All you need to know about physiological carrying and advantages of wearing.
Evelyn Kirkilionis, a specialist in human behavior, from a scientific point of view explains why young children ask for their hands and why it is very important and useful to respond to this need. She says that an adult’s stay in a certain historical era was a vital necessity for babies, and in our time it remains the most favorable condition for the physical and emotional health of infants.
The book clearly shows that carrying a child in the hands in an upright position fully corresponds to his anatomy and physiology, and is also an effective method of preventing and treating diseases of the hip joints