I decided to stop when I my heart started racing randomly (im closer to 30 than 40) sometimes so I visited the doctor and they basically told me to stop drinking energy drinks and sleep more.
I have tried before to lower the amount but if I drink energy drinks I always end up in that bad circle. That said I love red bull. I love the taste, how clear my head gets whenever I drink it etc but I cannot drink it anymore because it is very harmful for my health.
Sadly, I don't do moderation well, so it's on my list of things I used to love but can no longer tolerate. Right up there with cola, sugar, tobacco, and alcohol.
Would never spend $2+ for a drink that costs about $0.09 to manufacture.
Sadly, adhering to this rule would prevent buying coffee and beer -- two things I'm looking forward to as the world re-opens :)
8.4oz of Red Bull is about $2.
1.4 cents per ounce vs 47 cents per ounce!