Heres some Explanations and reasoning for u.. i used to Drink redbull on my exams Perios.. up to 4 a day. thinking it might Help me concentrate.. it totally did . But.. every time i need to focus or concentrate or study i need to drink a redbull now. im trying to shake off this bad habit ,, The chest&stomach pain is a thing i've had. Very Severe Pain comes and disappears and sometimes even wakes me up when im sleeping . i Went to a doctor about this and he said it was an Acid Disorder im My chest or stomach. there was too much acid in there.. so he gave me Pills To take 2 times a day for a month and Gave me an Liquid That balances the acidity and base up there,. after that the pain started to Go away.. coming back sometimes but not as painful... the doctor also told me to eat whenever i feel the pain. it would make it go away