It’s common knowledge that executing a great catch is key for...

Here’s how to do it.
The upper arm, above the elbow, doesn’t move much at all.
Swimmers just need to bend the elbow and rotate the hand down.
It’s only when the lower arm is in position that she brings the upper arm back to power the stroke.
Set it up and then let it rip.
It only works if those steps are coordinated.
Too often, they’re not.
As a result, swimmers never develop the skills they need to swim fast.