I find that caffeine after ~2 P.M. is a lot more disruptive than before. I drink ~40 fluid ounces of strong drip coffee and don't have any trouble waking up (or any sort of headache, at least not anything immediate, I definitely service the habit). If I stick closer to 30 floz, I don't think I get a headache at all.
I find that caffeine after ~2 P.M. is a lot more disruptive than before. I drink ~40 fluid ounces of strong drip coffee and don't have any trouble waking up (or any sort of headache, at least not anything immediate, I definitely service the habit). If I stick closer to 30 floz, I don't think I get a headache at all.