Just wondered if there were any specific form lapses anybody knew of to cause such an affliction!
Lots of possibilities, just off the top of my head, most of which are not mutually exclusive:
--Pulling with the arm on the up swing
--Leading with the shoulders (driving the swing by throwing the shoulder up and back instead of by extending the hips)
--Leading with the head on the up swing
--Not getting the arm connected to the torso on the down swing
--Hinging too early
--Dropping the bell too low on the down swing
--Letting the bell pull the shoulder forward on the down swing
--Initiating the forward hip drive too early
--Trying to blast the bell out of the hole too abruptly instead of ramping up the power smoothly to finish the hip drive strong
--Twisting the shoulders on the down swing and untwisting them on the up swing.
Often you can get away with these kinds of things with lighter bells, but not with heavier ones.
if you get hurt it's your fault
I'm not really directing this comment @Bret S, who was quoting the book (Edit: and I agree with his point about patience and discretion helping to avoid a lot of problems), but I really hate this saying. I think it's overly simplistic, unrealistic, and it bothers me to blame/shame someone who is already suffering with an injury.
Wisdom leads to good decisions, but bad decisions lead to wisdom. Sometimes you just don't know any better (and often can't be expected to), and sometimes you're just unlucky. People make mistakes trying to figure it out and, IMO, "It's your fault" just adds insult to injury.