This is a quick drill that I work into my press practice on a regular basis!! As I said in the video, this kind of work is what got me to my 24 kg press this past fall!
Try each part of the groove for a 15-20 sec hold for 2-3 reps (e.g. rack, 45, lock = 1 x3) in place of a medium press day and let me know how it goes! Need help with your press mechanics? Click HERE for information on coaching online or in-person!