Growth hormone is what gave you growing pains as a child, as it plays a role in skeletal muscle tissues and other muscles in the body. (blog.fitplanapp.com)
In order to maximize your muscle fullness, you need to ensure you're optimally storing carbohydrates (glycogen) within skeletal muscle tissue. (jackedfactory.com)
BCAAs make up almost one - third of skeletal muscle tissue in humans, and leucine, isoleucine and valine are the three most important aminos for feeding hungry muscle. (womenshealthandfitness.com.au)