After an eye injury took boxing and martial-arts champion Eddie Croft out of the ring, he set himself a new goal: becoming the first person to train a boxing, kickboxing, and mixed-martial-arts champion. Having already trained a world kickboxing champion and five San Francisco Golden Gloves winners, he is well on his way.

Croft plies his trade at B Street Boxing, where his team of instructors teaches professionals and amateurs the arts of boxing, muay thai, kickboxing, Brazilian jiujitsu, and tae kwon do. In the red, white, and blue ring of B Street Boxing’s gym, students jab and spar, practice their skills on punching bags, or check their form in a mirrored wall. Conditioning and boot-camp sessions also keep students from all backgrounds fit while imparting dedication, discipline, and the desire to wear boxing gloves even in the shower.