<s>[INST] Recently, my boyfriend told me that his left arm tingles, feels like it s going numb and that he s having a heart attack while I m doing fellatio. He said this usually happens when he s climaxing and I m swallowing . He s entire body is sensative right after to where he giggles or feels likes static eletricity just happened if I try to touch him after he s climaxed. After about 5 minutes, he is fine and in a abnormally deep sleep. He is a smoker and 39 yo [/INST] Hi, Thanks for posting your query. There is nothing to worry. All that your boy friend's expressions are nothing but the different experiences of orgasm that he has. Heart palpitations, muscular contractions, high excitement and elated feeling are expressed like that. It has to be enjoyed and not to be feared. Good days ahead for you. Dr S.Murugan </s>