I usually stretch out my legs pretty well before a workout. I used to have knee problems and my physio told me it was due to tight muscles connecting to my knee cap.
So I do the stretches he recommended before every workout and they help to keep my knees in check.
I wanted to as is it good to do this before or after a workout?
Following Rippetoes the first exercise of every workout for me is the good old Squat. I do think if i didn't stretch before the squat it wouldn't be able to squat properly.. But then some do say stretching slightly weakens the muscles?
What do you guys think?