Energy drinks and TTC

BabyK`sMom β€’ IVF miracle born 4/20/17 x2 sweet angel babies πŸ–€πŸ‘ΌπŸ»πŸ‘ΌπŸ» 🌈 due 3/31/20
my husband drinks at least one Rockstar per day. I'm not the type of wife that tells him what to do, but since we are TTC I have asked him to lay off the energy drinks, as I feel that they can't be good for his sperm. He is refusing to stop drinking them. Anyone have any idea how much this effects our chances of conceiving, if at all?? Thank you!Β