I’ve been a daily smoker for 26 years. I’ve taken the past four + months off. I’m really missing it too. The Red Bull is definitely not good for you, and could be the reason for heart palpitations, but I have sometimes gotten palpitations from smoking.
Your right should have come off one see how i got on then the other probably would have made more sense plus with age your body works differently so guess gotta live with it now