[PoppaDLo]

If I take an make myself a whey protein shake and then put it in the fridge/cooler how long can it stay pre made without going bad?

[Freak]

Not sure but why do you need to pre-make it. It doesn't take long to make in the first place. Sorry that didn't answer your question but I'm not sure of the exact answer.

[stalion]

just take the powder in a zip lock bag and a shaker bottle with water

[Jake_ironman]

I would pre make my protein (milk and ISO MASS[so like.. egg,whey, and casein protein]).

Then I would stick it in the fridge at work for a 5-6 hour shift..then i would take it out.. then bring it to the gym and stick it in the locker for about an hour to two hours and it would still be cool and taste great lol.

As long as u dont put... orange juice in it or soemthin it won't go bad at all believe me...

I did this for like 5 months when I was in school and didn't have time to work out before work.

I'm sure it will be fine if u do it :P

[F-111]

Wont be a problem mate, as long as if ur mixing with milk it stays cool u'll be fine. water will be fine all day!

[illnino]

dont stress about small things like that. the amount u stress over it and over analyse things your cortosol levels no doubt sky rocket. so do wats best for you.