[MrMcCall]

I get sleepy if I have too many vitamins/minerals (eg: a whole PowerBar or entire Orgain drink), so maybe it's the minerals, perhaps Magnesium?

[Magnesium helps my wife sleep better, but she can only take it at night or it makes her sleepy. I take half in the morning, and I think it helps because we're likely not getting enough in our mineral-depleted foods.]