Energy drinks will probably kill you, but if you can’t go without the pick-me-up, Red Bull is probably the least disgusting option out there. And anyone who’s ever bought an emergency can at a gas station knows that any deal under $1 per can is pretty eye opening. Just be sure to use Subscribe & Save to get the best price; you can always cancel after your first box ships.
If you prefer the larger 12 ounce cans, that 24-pack is an equally good deal.