I really enjoy the energizing feeling of coffee (caffeine), but after months of drinking several cups a day I don’t get it anymore. At this point I’ll usually

I really enjoy the energizing feeling of coffee (caffeine), but after months of drinking several cups a day I don’t get it anymore. At this point I’ll usually go off coffee for a couple weeks to reduce my tolerance, then after that I’ll ramp up again. Side effects during the first week are headaches and feeling somewhat tired, but not too bad.