Go for follow up. My friend cycled alot, hardcore also. Now at home, last 2 month have heart attack 2 stent deployed. You, 5km is peanut. You want to wait until have heart attack up to you.

I suspect never check, don't want to ask him at this moment. I think before this got indication blood pressure high that is why he started cycling. Il someone ask for advice I always say don't stress your heart. Especially if after 35. Just do casual exercise. Different story if doing it when still young. We heard alot of story died during exercise or active kind of person.

LATEST UPDATE:

I went to one of the top specialist in Msia.

Had echocardiogram and CT scan.

Cardio informed me that stress test 40% of time can give a false negative.

he checked my history, my family does not have heart disease.

after checking he said my heart has no issue. no blockage.

YAY, thanks guys.