Fit 4U Is 4U Fitness is a Kansas City health and fitness business offering certified personal training, fitness instruction, and nutrition and health programs. Services include individual fitness training in a private studio or virtually, along with weight training and weight loss programs. The business also provides specially designed fitness classes such as Zumba, chair exercises, and other training formats for schools, churches, senior assisted living communities, and organizations, as well as onsite or virtual conference and workshop sessions.