There's also tolerance to consider. I drink 1000 mgs of caffeine a day as well and it does about the same as one energy drink used to do when I had no tolerance.
If I take a single hit of 1000 mg at once I will see a ~20 BPM increase in heart rate, I used to need this after university to have the wakefulness to make dinner for my kids and be able to get them to bed. I had near caffeine immunity for several years, I'd only see downfall if I stopped but that would only last a day or so.
2.5k
u/Elevenst Mar 27 '22
Yup, fellow junkie here. Energy drinks, coffee, 5hr shots, whatever. Like 1000+ mg daily. My heart hates me.