Here's a trick I learned in college. Get something COLD (ice pack, a can of pop from the fridge, bag of ice. Even a swath of paper towels that have been run un

Here's a trick I learned in college. Get something COLD (ice pack, a can of pop from the fridge, bag of ice. Even a swath of paper towels that have been run under a cold-running faucet for a while can do the trick Place it on your forehead, centered, just above your eyes. That always jolted me awake for a good 15-30 mins, though your mileage may vary. I am not sure of the science behind it, though I do remember reading it on some sort of lifehacker-type blog, so I didn't invent this.