When
As I’ve said before, your body is an incredibly efficient machine. It’s not going to build new muscle mass unless it’s really necessary; doing so would be a waste of energy. So… in order to stimulate new muscle growth, you have to prove to your body that you need it.
How do you do that?
By demonstrating that your current muscle mass isn’t enough for the job. When you train to the point of failure, you send a very clear signal to your body that more muscles are needed. Provided other elements - like adequate rest and proper nutrition - are in place, those muscles will grow.
Here’s the problem: Most people don’t train until failure… even though they think they do.
When training for muscle growth, most individuals will target a range of less than 10 - 12 repetitions. On the last rep, you should be completely unable to do another rep without compromising form or reducing the resistance. You might think that you’re doing that and training to failure, but you’re probably not.
Perfect case in point. The other day, I was working out with a friend. We were doing shrugs. He usually uses 75 pound dumbbells for the exercise. I reached for the 90 pound dumbbells and he decided to give them a try. To his surprise, he was able to complete the set. In fact, he probably could have done more.
My point is that you really need to push yourself to find your limits. You’re probably a lot stronger than you think. Opt for heavier weights and more resistance. Give it a try. Sure, it will make your workout harder and more intense. But it will also get you the results you really want.