Caffeine timing for evening lifts, what's the cutoff?
So I've been trying to figure out how late I can sip my pre-workout before I turn into a caffeinated insomniac. I usually hit the gym around 7 PM, but if I take caffeine too late, I'm staring at the ceiling like I just drank a pot of coffee. I know there's a bunch of mixed opinions on this, but what's the real cutoff time for evening lifters? I can't be dropping dollars on sleep aids when I'm already on a ramen noodle budget.