How often should/can this be done?....I got tired of my same shoulder routine and did drop sets for rear laterals and side.......I've done this the past 3 workouts.....is it for just for a jolt? I feel like I need to do this every time now......Gonna do it for chest next......its nice really draining the muscle out even w/ 5 lb dumbells.......(on final drop set)..... but not sure if I keep doing this if I'm doing more harm then good......thanks
