Should there be any preliminary training for Muay Thai?

Most of my family members (including me) fight muay thai but im not sure if my 7 year old brother is tough enough and might get hurt (hes pretty sensitive). Everyone thinks its fine but i doubt they can feel pain as easily as he does|||Don%26#039;t even hurt your brother or any kid! That%26#039;s ****** up.|||llet him do it if he wants to he do fine|||At the very least you can get him into calisthenics and the basics of kicking, punching, a good attitude, and everything else. Just ensure he utilizes good technique so as not to damage his joints. I%26#039;m unaware of any at present, but you might want to research techniques children should postpone doing while their ligaments are developing.