There are some advantages and disadvantages to this product that buyers need to be aware of before purchasing:
-this is a great in-home piece of equipment to primarily exercise the chest (pecs), front shoulder (anterior deltoids), and back of the arms (triceps)
-once you can do 20 reps in a row with this item, you will not get these muscles any stronger using this piece of equipment. The srength training literature is quite clear (ex. Fleck and Kramer) that anything OVER 20 reps of an exercise will build primarily muscle ENDURANCE and NOT strength. Thus, you can strengthen the above named muscles only to a certain extent- since this exercise equipment is unable to provide progressive resistance (unlike a weight machine or dumbbell where you can keep adding a little more weight now and then which challenges the muscle and makes it grow bigger and stronger). Having said that, it is a great tool to use for moderate strengthening and to maintain a certain level of fitness. Just know it won't turn you into Hercules...
-this is an especially good piece of equipment to use if you have wrist problems since it can rotate and let your wrists do what they do naturally with you do this pressing type motion- unlike other exercise equipment where your hand is fixed on a bar.
-using this piece of equipment is vastly superior to regular floor push-ups as it allows the torso to "sink down" to the floor more which increases the range of motion for you to exercise in. Thus, the muscles are exercised more thoroughly thru a greater range.
When all is said and done: Its a good product for someone looking for a moderate upper body workout and wants to "stay in shape". Also recommend Treat Your Own Rotator Cuff
if you have a shoulder problem that interferes with your workout.