I hope you stay with this, because besides stronger muscles and being less prone to injuries, flexible leg muscules lead to longer stride - higher speed, not a lot but any 1 or 2 % is a plus
"the benefits of stetching": meet your neighbors.
Howling in pain during stretching usually means you're overdoing it (unless you're astonishingly wussy and your training load kind of relegates that theory to the dustbin of moronic ideas). I hope this is an exception.
Boris can you translate to me what the last comment ment.
From John (the part in ())