Power Bites; Experts pick the perfect snack for every occasion, from study time to sugar cravings.

Pre-workout Essential fresh fruit

Help yourself to fruit 30 minutes before hitting the gym. It's easy to digest, so you won't experience cramping, which some people get with protein, says New York City registered dietitian Heather Bauer. in-a-hurry option string cheese

Running late? Turn to prepackaged alternatives. String cheese is an easy choice. It'll give you energy and calcium, says New York City-based nutritionist Oz Garcia. sweet-tooth satisfier fruit-flavored yogurt

When the urge to reach for something sugary hits, Bauer suggests putting a low-fat fruit yogurt in the freezer. After about fifteen minutes, it'll become like frozen yogurt, and …