if you are already running testosterone hcg wont help you wint test levels as exogenous test dictates levels, the moment a needle goes in the balls stop producing

so whatever you are injecting is what the levels are

hcg does help keep the balls in a idle ready to go state so when the cycle is over they will start producing quicker. hcg keeps LH and FSH production somewhat flowing so bounce back is easier

weight control is purely diet, hcg doesnt help with that in this case