i've been working out at night after dinner (because i gotta work during the day). i've just started taking ON 100% whey, for pre-workout (whey+oats) and post-workout (whey+glucolin+oats).

however, during the night, i'm having real trouble sleeping, like getting a really good rest. it's either i take a really long time to fall asleep or i'll wake up after 5 hours or so automatically and will have trouble going back to sleep again.

i think i've pretty much narrowed it down to the whey, as i've worked out before during the night without whey intake for pre and post workout, and i had no trouble sleeping. also i've tried eliminating glucolin and the oats from the equation to see if they were the ones causing this, and i still have the same problem.

on days when i don't consume whey, i sleep perfectly. so it seems like the whey is causing this.
the whey flavour that i'm consuming at the moment is cookies and cream.

is this common?

This post has been edited by jackhammer84: May 11 2009, 10:43 AM

yeah, i understand that sleeping issues could be caused by many reasons, but the reason why i narrowed down to whey was because i've only started taking whey recently, and before this i have never had any sleeping issues.

here's a short summary of what happened:
last tuesday i worked out at night, and i took whey during post, and then i had trouble sleeping.
then saturday i worked out, but in the morning, but i didn't have any issues sleeping later at night.
last night, i decided to take one serving, with milk, for recovery overnight (sorry, no casein supplements yet ), and then i had trouble sleeping again.

now i'm pretty zombie-like at the moment, as you can imagine, haha.

so far, it has only happened twice, so i'm not sure if it's enough to correlate insomnia with whey. although, the 2 times seems to have the whey involved though.

as for my diet, pretty standard. 4 meals a day, excluding snacks in between. have been observing the same diet before without any insomnia. the only thing that stands out in my diet for yesterday only was i had 2 cups of coffee in the afternoon, but i doubt that would affect my sleep coz it never had before. or at least i hope it didn't, coz i love my coffee

yeah i think it could be the night workout itself. but that's the best time for me for weekdays, haha.

i don't think whey protein is hard to digest.

what i'm guessing is probably the insomnia might have something to do with the fact that whey is really fast absorbing/digesting. maybe i gotta try looking for an alternative post-workout protein source for my night workouts, a slower digesting one like casein or something. but it's kinda expensive to get another casein supplement, since i only just got my whey supplement few days ago , haha.

hmm, another alternative would be 2 glasses of milk with a peanut butter sandwich for post-workout, right before bed. and then only i'll take the whey first thing in the morning the next day. for recovery purposes. what do you think?