If your child sits in this position, stop it immediately: Long-term consequences

Indeed, that body position can have a critical effect on later development.
Ask why?
Children who continue to sit even after their second birthday risk improper muscle development and destroyed balance, which is necessary for certain motor skills.
It can even lead to numb muscles of the legs and joints, and even dislocation of the hamstrings.
In addition to these consequences, it is possible that your child will start walking on the toes turned outwards.
To reduce the risk, it is important that parents pay attention to the position in which children play or watch television programs and do not allow the ‘w’ pose.