When you go to a gym, or even if you train from home, it’s vital to have a clear idea in your mind of what you want to achieve from your workout. Then you can select the exercises that will best help you to achieve your goals.
The first thing you need to realise is that there is no such thing as the perfect workout - a single routine that you can perform again and again to help you build muscle and burn fat. The human body has more than 650 muscles and you can’t hope to work all of them thoroughly in one single workout. You have to