[12 piece bucket]

I have enjoyed biomechanics posts but find them difficult to follow as written. I particular was interested in this post
What they don't understand is why you create separation between the hips and upper body on the downswing. And how you achieve this either.

It's not important to how much your turn your hips in relation to your upper body.The reason you create separation is to elongate the muscles group from the hips to upperbody. The elongation stretches the muscle groups. This also releases a chemical energy which makes the muscles fire. To activate this you only initially need to turn the hips 5 to 10 degrees. Important, once you created separation the lower body must stabilize, so you can you fire the upper body straight away.
If you maintain separation for two long the chemical energy turns into heat. It must be loaded and fired straight away or you lose loading and firing of the muscles.

I remember years ago it was suggested that those golfers who used too much right hand immobilize the right hand and arm by contracting and holding the muscles for 10 seconds several times before hitting. This used up the chemical and therefore the right side couldn't fire. a cure for hooking.

It would be nice if someone could summarize this thread succintly for an old guy like me. There have been many comments about biomechanics but not much meat shared. Is it priveleged information or available elsewhere for a fee.

I just read your post and didn't catch that 5 to 10 degree thing . . . . My question is where? On the backstroke? Downstroke? Another thing would be what plane angle are we talking about?

As to that deal about contracting and holding muscles for ten seconds . . . I've heard about doing that for some other stuff . . . and it wasn't for no hooking (well maybe it was???). But if people think that's gonna cure a hook . . . . they need to head up to Maine and meet one Mr. Olberdingleberry . . . There is no address but you'll know your close by the distinct stench in the air. Nothing like the smell of goat turds in the morning . . . .