AboutĀ us. Bounce FitnessĀ is a complete Health and Fitness service that offers In-Home Personal Training, group fitness, and wellness services. Bounce Fitness is the largest provider of in-home personal training and wellness services in the Washington DC Metropolitan area. . Bounce Fitness is accepting applications for full-time or part-time interns to begin this January 2018 until January 2019. This internship is for the Graduate or Undergraduate...