So I hear if you lift about 80% of your max weight all the way up and thien count out about 4 seconds as your bringing it down. By slowly bringing it down it helps rip thoughs muscles and its much more effective for building muscle mass. Is this a good routine to get into say switching out of 3 sets of 10 reps for more of a cardio workout or cercait training like after you get the cut look you want to thien do negatives to buld muscle mass.