Bryan Kastl, operator and co-owner of Hercules CrossFit, muscled his way to certifications in Olympic lifting in 2009. But he has studied fitness and physiology since the early ‘90s, when he became a certified personal trainer through Hayward State University. Co-owner and certified trainer Lesha Kastl also lifts at an Olympic level, but she favors movement-based workouts including Muay Thai boxing, Pilates, and runway-overthrowing Ms. Fitness competitions. Both Lesha and Bryan have studied massage therapy to supplement their expertise of internal musculature. Bryan even sought the guidance of a chiropractor to learn injury-specific techniques such as active-release technique.
The Kastls area also both Level 1 CrossFit trainers with certifications in CrossFit mobility and gymnastics, which they rely on during CrossFit classes comprised of nonspecialized, functional exercises. Weightlifting and gymnastic-ring work, for example, are selected because they can be easily adjusted according to fitness level and directly improve mundane tasks such as hauling groceries or catching trapeze swings to work. As a result, the workouts are remarkably inclusive, and the Kastls have guided energetic kids and those struggling with physical ailments toward strength and cardiovascular health. Lesha's background in sports nutrition enables her to design dietary programs that boost performance and bolster the effects of exercise.:m]]