I bought this product at Staples for $20 (I got a good deal

).
I am following the 21 day workout and heard from a friend that
used it that one will see big results when you MAX is 60 or more.
I am wondering if anyone here has followed that workout
or bought the Perfect Pushup?
Also, if you received favorable results following the 21 day
workout, did you follow the workout step by step or did you
mix or add different things to the initial workout?