Anonymous wrote:3. Crossfit gyms, called "boxes," vary widely. Some are terrible - the trainers earned their certificate in one weekend and they push too hard. Others are great. The trainers know how to scale for everybody so no one gets injured. The claim that grandmas can do Crossfit is very true.
We have friends who live and breathe Crossfit but it doesn't appeal to me one bit. First, as PP noted, the certification of the trainers varies. Workouts seem to vary one day to the next with no sense of building from one week or day to the next. You're just pushing yourself bit by bit to get stronger but there isn't a clear progression of ability with built-in rest periods.
Like PP, I'm a triathlete (although not yet an Ironman) and having spent years running, biking and swimming I have a good sense of the value of periodization and gradual increase of intensity and endurance. Based on conversations with friends, I don't see evidence of that and therefore see the risk of injury as heightened.