Absolutely not. I began doing Static Contraction using free weights after reading the book “The Golfer’s Two Minute Workout” co-authored by John Little and Pete Sisco in which they described static contraction workouts using free weights or machines of the day. Very soon however I outgrew the limits of conventional free weights and machines. Not to mention the fact that it was extremely dangerous AND I always had to have at least 1 if not 2 spotters. Using free weights or conventional machines is vastly inferior to using the PeakFitPro, however you will make great gains at the gym using conventional methods.