Patient: Hi doctor, im jegan here from malaysia..I am asking behalf of my friend as he feels embarrased to enquire about his ED problems..Firstly he is only 22 years old. He used to be sexually active but however due to heavy smoking, it led to this problem..Since then he quit smoking and engaged in cardio exercises 3 times a week for the past 2 months..the thing is he is getting back his erections slowly but only a few days after excercise..His question is when plaque in Your arteries slowly start to break off after excercise, does it cause temporary insufficient blood flow?