JH here’s your Da Vinci answer trail view.
We have stirrups that start in feet and go to top of head . That's all I'll say on this for now. Now knowing the reflexology of the rest is what unlocks your ability to look normal and make a full motion. Biomechanical structural feel and functions will never get you anywhere but lost and contrived . So JH here's a huge hint. There is reflexology and parametric acceleration and I can get my club head speed as high as 155 using reflexology and never get hurt or be hurt. As if parametric acceleration it's total bullshit and tears your spine to shreds and cannot produce 155 as I've done it that way and it's a total joke and irrelevant. Reflexology is running your life from birth to death unlock that and it's over. I've figured all that out. I don't chase Da vinci cause it's easier then even that.
"Simplicity is the ultimate sophistication."
Leonardo da Vinci