Vasovagal. A new word learnt on gaining consciousness. Fainting due to sudden stress/shock/hunger/tiredness. A morning of cooking/washing and baking. A quick bite of lunch. All culminate to tiredness and low glucose level. Late saturday morning, during the process of blood drawing, I passed out. Upon waking, found the nurse wiping the sweat and checking my pulse. Doc on site assured me, it was normal. After an hour and throwing up, I was able to stand up. It's going to be a while before I next volunteer.