Why does the straightening right arm uncock the left wrist?

[detonum]

Why does the straightening right arm uncock the left wrist? I know this happens but I'd like to know why.

 

[Kevin Shields]

Because the right elbow supports the heel pad of the right hand pressuring the left thumb on the shaft. When a proper energy transfer straightens the right arm the next in line is the left wrist. The real key is learning to uncock the left wrist without losing the bend in the right wrist.

 

[Brian Manzella]

Why does the straightening right arm uncock the left wrist? I know this happens but I'd like to know why.

It doesn't have to.

But, almost all of the time is does.

Why?

I hate to say it again...but..."it'll be on the "Friends" video.