With all the great health-related Android apps out there, these smartphone users must be pretty fit. We've gathered together our five favorite apps that help plan workouts, track calories, chart GPS runs and keep you motivated in your exercise routines. Check 'em out below.

MyFitnessPalGreat for calorie counting, MyFitnessPal has a barcode scanning option that automatically logs in food info, and lets you track particular food qualities such as fiber. Use the PC, web and phone app versions together.

FatSecretFatSecret is a calorie counter and meal planner, designed to help you manage your daily caloric intake with the goal of losing weight. Simple interface displays calories remaining so you always know what you can and can't eat.

JEFITIf you need a gym log or an exercise reference, JEFIT is the app to grab. Designed by serious bodybuilders, it tracks your gym activities and provides graphs for your workouts and body stats. Sync with your PC for easier management and data entry.

CardioTrainerCardioTrainer is the first mobile Google Health partner, and comes highly recommended. Excellent for planning workouts, tracking your walking and running, and it integrates music and offers voice feedback as you go along. Compatible with Polar's Bluetooth Heart Rate Monitor.

RunKeeperAnother great exercise tracker, RunKeeper lets you track all of your physical activities and upload them to their website for easier management. It also uses GPS to track your runs, measures your distance and time, and overlays your route on a map.

What Android apps do you use for health, fitness, diet and exercise?

(Image: Flickr member sashawolff licensed for use under Creative Commons)