True story, a month or so ago my boss mentioned that him and his fiance went to a Crossfit gym and signed up. He is fairly out of shape, 30 years old, wanting to lose weight for his wedding and feel young again.
Honestly I was kind of a dikk and mocked him about it, which put him on the defensive because he had just dropped a lot of money and was countering my 'crossfit sucks' arguments with all the standard defense
Literally the next day he walks into work limping. Hurt himself doing crossfit, had a doctors appointment later that day. This time I didn't say anything but the 'i told you so' expression on my face was blatant
He is still doing the Crossfit though, he likes it. I haven't seen him lose any noticeable weight yet though.