In adults, hgh can help in a number of ways as well. It can give enhanced energy and even strength. It can also improve bone density as well. Muscle mass increases may be at the risk of adipose tissue, though.The hormone is injected into muscle or subcutaneous tissue. Many adults who experience human growth deficiency (the cause for needed HGH) do not get the treatments that can benefit them for a number of reasons.As a person ages it’s more arduous to find the time and drive to exercise as he lacks energy because hgh production has slowed down.