BE WARNED of Workout programs that want to you max out or speed counted reps in a time frame, your instructor is an idiot and creating an environment of injury!! Basic known fact, your technique and form fails as you become fatigued and causes the body risk injury. You also aren't using full muscle when relying on momentum to complete the said exercise. Try maxing out with a steady proper form. that equals more actual productive work in a safer environment...then kick your trainer in the head for being a dumb ass.