Sports chews are great for a mid-workout kick, but Ma Nature has something that can give you the same jolt: raisins. University of California at Davis researchers tuckered people out by having them run for 80 minutes. The exercisers then consumed either 100 calories of raisins, sports chews, or water only, and then ran a 5K. Those who had raisins or chews ran one minute faster then the water drinkers. The dried fruit can give your body the carbs it craves to keep energy-revving blood sugar levels up until you throw in the towel. Try ‘em during workouts lasting at least an hour or as a pre-run snack.
