Steady your head with a shaft while you practice
The instructor's drill for keeping the head steady while practicing the swing. If someone can help you, they can use a club shaft to hold your head in place; if you are practicing alone, you can rest your head against the shaft so it does not move while you swing.
Channel: Golf with Aimee
Watch official source at 4:58Why this context matters
From a lesson on fixing topped iron shots caused by the head lifting.