Work the lead knee under with a centered head
The speaker describes the first part of his backswing move: getting the lead thigh and lead knee to work underneath and inward toward the golf ball while keeping the head still and centered. He says this lines up his left side, creates resistance, and gives a feeling of having more time in the swing rather than things extending and kicking.
Channel: CraigHansonGolf
Watch official source at 0:52Why this context matters
Framed as the first area of his backswing 'magic move'.