I take hcg every week, it will keep the larger and hanging lower, yes, it will wear off if you don't use it. ON the Testosterone shots, after about 3 or 4 months, the testicles think there is no use putting out anything because the brain says it has testosterone, so some of the cells in the testicles just get smaller and shut down. THE hcg keeps them full and active. Someone said they read where weightlifters use hcg after a round of steroids...that is true.
Another factor with hcg...it makes your body more open to natural insulin and if you are a diabetic, it reduces insulin resistence and you can take less insulin.