How Many Sets You ACTUALLY Need to Maximize Growth

How many sets per muscle group per week do you really need to build muscle? Some say just 1 set taken to all-out failure is best. Whereas others go high workout volume, doing 4-5 sets per exercise and taking over 3 hours to complete a workout. Who's right? And more importantly, how many sets per muscle group per week should YOU do, especially as a natural? Well, the answer to optimal training volume might surprise you and is probably a lot less than you're currently doing. Here's how many sets per week you should be doing.