re: what is worse - hipsters or crossfitters?

I guess you didn't read it.

1.) One, it says this rate was 'significantly' less when a trainer was involved, versus those doing ind. work.

2.) I will quote "Participants reported primarily acute and fairly mild injuries"

Answer one question and we will continue. What criteria was needing to be met in that study to report an injury? Tennis elbow, bursitis, ruptured spleen. I have a case of tennis elbow right now, if someone asked me if I was injured doing crossfit, I would say yes. I also had tennis elbow playing tennis.