Ohhh damn guys! Tried these new 28s with my gym partners this week with chest (bench Press) and back (lat pull down)
AND THEY DEF WORK. It BUrrrrns!
It is the same principle as 21. 7 partial half reps lower range of motion, 7 partial reps upper range of motion and then 7 full range of motion reps.
With 28s there is a 7 sec isometric hold on the middle position of the range of motion. So with bench keeping your elbows at 90 degrees, and same with lat pull down.
Focus and form is what I've been doing as well. Works for me. I make sure to get the full range of motion and have a slow negative with explosive positive.
It's simple, if it jiggles, it's fat. - Arnold Schwarzenegger