Full swing · Changes the swing

Pump drill (top, drop, rotate)

Take the club to the top with your normal backswing. Drop your hands to hip height so the club is behind you and pause briefly. Then rotate your chest and hips to the target and hit the ball, letting the body lead instead of the hands. Hit 10 balls like this, then 10 with your normal swing.

Trains
Low point, Fat, Thin
Dose (suggestion)
10 balls with the drill, then 10 normal
Count
Clean strikes (ball first, then turf), out of N
Stop signal
Stop: pain 3 out of 10 or more, pain spreading into an arm or leg, numbness, or more pain the next morning.
Source
Evan Thompson: The Drill I Keep Coming Back To…