Suck on a mint
Researchers at West Virginia's Wheeling Jesuit University found that the scents of peppermint and cinnamon boost alertness while cutting fatigue in drivers.
Crank the stereo
Fast music with high frequency sounds like high voices, violins and saxophones will help keep you sharp. "Brains waves, heart rate and breathe will speed up to match the rhythm," says Joshua Leeds, a psychoacoustic researcher.
Grab a cup of coffee
A recent study published in the journal Sleep found that drinking coffee is more effective than taking a power nap.