The most important factors to make progress in your training are in this order: perfect technique consistency exercise selection If you don’t do the right things the right way often enough, you’re just not going to get stronger. And the stronger you get, the more muscle you can build. But to keep getting stronger, …

First things first: it’s impossible to isolate any particular part of your body. Just because you’re performing a tricep pressdown, it doesn’t mean that only your tricep is working. Instead of thinking about muscles, it’s better to look at movements if you want to develop real strength, build muscle, and be resilient enough to …