The amount of muscle you can build is controlled by multiple factors, the two most important being your genetic starting point and your workout routine.
Your age is the next most important factor.
The specifics of your workout routine including the sets and reps and rest intervals play an important role in determining which routine will work best for you based on your current training status and your goals.
Nutrition and supplementation plays a minor role in muscle building. Adequate calories and how much protein you eat daily are all that is typically needed to ensure maximum results from a muscle building program.
In today’s audio training lesson we’ll discuss the major factors that contribute to your muscle building success.
(transcript: Insider Muscle Building)