I feel so much power after ejaculation ! y is that ?

hi too all . i am a power lifter and bodybuilder . 21 age . my friends says ejaculation is bad for health . my teachers and coaches also say us don't do this this is really bad for your health . but i am not able to control my self . i do this every day or some time twice in a day . and i feel so much power and hunger after . i do this in night time before sleeping . but yesterday i done it in morning . normally my dead lift is 175kg not one rap more then this but yesterday after . i done 175 kg 5 raps and then 205 kg one rap max . what is this . why is this . is this really bad for health or this is old theory .