Prana Fitness in Casper, Wyoming! Prana is full of Vital Energy.... Your Energy! Come and experience the most fun and rewarding fitness classes in Casper! Prana's functional fitness classes are designed to increase your metabolism and change up your fitness routine. Prana provides fun and intense workouts through functional strength training, circuit training, and plyometrics. The classes offer a supportive team environment to help you lose fat, tone your muscles, improve your fitness and learn to live a healthier lifestyle.