Originally Posted by canklecat

Oh, yeah, I drink coffee every day, usually two or three mugs in the morning. But not late at night. After a long gravel ride with friends I stopped to rest and socialize for about an hour before heading home. I was sipping on a fresh water bottle with the NUUN Energy tablets. Got home after midnight, didn't feel a bit tired despite the long hot gravel ride and then another 12 miles home. Read in bed for awhile. Next thing I knew it was 5 a.m., hadn't slept a wink. Got my magnifying glass to read the fine print -- 40mg caffeine per tablet. Not a whole lot, compared with the roughly 300mg per cup I have in the morning. But that was three or four NUUN tablets with caffeine between 6 pm and midnight, more than I usually drink past noon.

But some of it may have been residual energy from a good ride. I'm usually physically exhausted after a long ride and fall asleep easily. So the combination of just being energized from a good ride without cramps, along with some caffeine, probably was responsible.

Anyway, it won't prevent me from using NUUN again. I'll just read the packets more carefully to be sure I use the caffeinated tablets only early in the day, and I'll skip one or two of my usual three cups of joe.