My guess is the kids at your son's school probably don't have an accurate image of crossfit. They could think it's just doing burpies, lunges, and other non-weight girly exercises. When in fact, there are all kinds of weights in crossfit. Also, When I moved I discovered that the kids are sometimes completely different depending on where you live. When I moved from the Dallas area to San Antonio, my son told me the kids were completely different, even had different videogame and movie preferences.

BTW I don't think those are girly exercises, just saying some people think of them that way.

many health experts have pointed out that cross fit has caused physical damage to many bodies one study found that US Rangers ended up having 12% MORE injuries when they used Crossfit. The US Airforce found that it increase muscle cell death in their recruits. Many Doctors in Physical Therapy will tell you to avoid it as will Kidney specialist. Why you would have a 9 year old doing a program which is shown to have many problems but I guess that is up to you

Many in the fitness world consider it more like "crossfad".

the kids at his school are probably weak and don't train at all. wait until he meets other kids who know more than he does and has more muscle.

Dont hate .

My son is 8 years old. He's been doing Muay Thai & Crossfit for about a year why.. He loves crossfit but says other people think crossfit is for ******* but yet my son is stronger then other kids in his grade, even stronger then some 9 year olds. My son has abs and muscle and can fight good (will compete in powerlifting competitions & May Thai fight in a few years).

Why the hate on crossfit? I personally think its a good starting point for kids.