does anyone know of any way to increase receptor sites. After doing 2 cycles of test(5oomg, and than 650 mg for 10 weeks) i have concluded almost all the test i inject is not being used. I gained about 8 pounds from each cycle which was the result of eating 1500 more calories than normal. I go off and do no pct because I can tell it is not needed, my natural test does not shut down. Please do not assume Im a dumb ass that has no idea what he is doing.