Speed Weight Training Fitness Center's Michael Johnson and Paul Davis’s resumes are just as impressive as their muscles. They certainly didn’t come by their chiseled physiques over night: Johnson put in 33 years of Army service—as an Army drill sergeant and front-line soldier—and boasts a quarter century of law enforcement experience, and Davis is a decorated police deputy chief and champion bodybuilder. Drawing from their fitness-heavy backgrounds, they developed their Speed Weight Training technique in 2001, motivating students to simultaneously burn fat while building muscle through a fast-paced workout regimen.

During high-intensity boot camps for adults, Sgt. Major Johnson pushes students toward fitness and reduced waistlines with positive encouragement, never intimidating them with threats of latrine duty. The trainers work with the needs and goals of each client during personal-training sessions, measuring their potential through body-fat, endurance, and strength tests, whose results they use to draft a nutrition and exercise regimen.