Does stretching really prevent injury? I recently read there is no correlation between stretching and injury prevention.
I mean, a lion does not warm up before it attacks on a deer or wilderbeest.
I'll say this much...since returning to the gym after my bicep tendon tear, I start every workout with about 10-15 minutes of band, cable, very light dbells, and stretching movements that I was put through when I did PT. If I am training back or arms, I go to the gym that has the hand-bike (which is how every PT session started) for 1 minute forward then 1 minute backward for each arm before that other stuff. The shoulder and elbow nagging pains that I had for almost all of my heavy training years and into my 30's & 40's has improved by I'd say 65-75% if I had to put a number on it.
My lower back, and legs are another story, but I think that's just part of creeping to 50. I need to get back to yoga like I did when I was around 38. Just took around 20 poses that I got from 3 different dvds, and did that 3-4 times a week in the mornings. Only takes 25-30 minutes tops, and made a huge difference. It's just a pain in the ass to get in the habit of doing that on top of cardio in the a.m.
As for your theory on the lion....that's not true. Watch your cat or dog when they get up from resting. They stretch almost every time as every waking moment is instinctually about being ready to find food.