GU
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Little packages, big punch

GU
These carb-filled gels supply ample energy when the body craves it, so taste and caffeine* content may be your deciding factors.

GU : Six flavors; all but one (banana) contain caffeine. GU packets hold up best under pressure. 1.1 ounces, 100 calories, $1.25 each. (800) 400-1995, www.gusports.com

* Studies have linked caffeine to heart arrhythmias when consumed during strenuous exercise.

Text by Scott Doggett
Photographs by Eric Boyd ()
HONEY STINGER
HONEY STINGER
Overwhelming honey taste across five flavors: pure honey, mint, “gensting,” banana, chocolate (caffeinated). Like the rest except PowerGel, Honey Stinger is also available in economy tubes. 1.3 ounces, 112-120 calories, $1.40 each. (866) 464-6639, www.honeystinger.com ()
CLIF SHOT
CLIF SHOT
Unlike the rest, Clif Shots contain brown rice syrup instead of maltodextrin, which gives them a very syrupy taste. Seven flavors, three of which (cola, mocha and strawberry) are caffeinated. 1.1 ounces, 100 calories, $1 each. (800) 421-1223, www.clifbar.com ()
POWERGEL
POWERGEL
Eight delicious flavors; four of them (green apple, tangerine, strawberry-banana and chocolate) contain caffeine. Highest total-carb count of group and 180 mg of electrolytes per packet (both good). 1.4 ounces, 110-120 calories, $1.30 each. (800) 587-6937, www.powerbar.com ()
CARB BOOM!
CARB BOOM!
All five flavors are yummy and sit lightly in tummy. Two flavors (vanilla orange and chocolate cherry) contain caffeine. Highest complex carbohydrate level of group (that’s good). No complaints. 1.4 ounces, 107 calories, $1.30 each. (800) 324-2574, www.carbboom.com ()
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