Without a sufficient training stimulus you cannot make any significant progress in your training. What you should know when it comes to setting right stimuli is here.
No matter what goal you pursue with your training, you have to be methodical to make progress. Here you will get to know two training methods that could hardly be more different.
The training stimulus basically consists of 3 factors and thus determines your muscle growth. Which 3 factors these are and how you can use them for your training, are shown here.
Everyone knows the situation. You come home from work exhausted and unmotivated and ask yourself the question: "Am I still going to the gym? Here you get a little psychological help.