An often over looked tool. These are great for a rehab progression. Find a height that is challenging for 3x 20-30 reps. As the shoulder gets stronger and better ROM, lower the hooks down weekly. This is a great beginner progression for someone who can’t do normal body weight push ups as well.
If you are already healthy, try 200 total reps in a workout and move the j-cups down a couple notches each week. You’ll quickly find out your not as pectacular as you thought.