It isn't bad the next day at all, as you might notice it a little, but its nothin to be afraid of. It also depends on the concentration of the milk and butter you are using to cook it, as that changes the concentration in each brownie, changing the amount of the effect upon you. I would go through with it and not worry bout it.
dude u will be fine, i do it all the time. It would be better for u to eat then to smoke if u have a soccer game the next day just for your lungs. i mean shit, its not booze or any, you will feel fine.
Sorry but i didn't read previous posts, however i do feel that the information i give you will be just as helpful if not more. Here is the deal, when you eat brownies the THC is processed through your insides not lungs, it is processed for a longer period of time. Every time I've done them the morning after i still feel high, and i feel groggy and weird for the rest of the day. Also sometimes a little high the next day, for some people they feel high all day the next day. I wouldn't man, not with a soccer game the next day. However go for it, because brownies are super duper fun, you get more of a body high, and IMO it is an all around better high, just feeling great. Plus for most people it's the highest you ever get, but still enjoyable, because of the type of high it is.
I've built up a CC (Captain Crunch) tolerance. its so nice, i can face a box and not scratch the top of my mouth or tongue at all.
it's honestly hard to say whether or not you'll feel it. it really depends on how you make the brownies, how many you eat, and when you eat them. I've had times where I'm fine the next morning, and I've also been glued to the couch for the entire next day. Honestly, I wouldn't fuck with it if I were you. Wait until you've got a free schedule.