Armor CrossFit

The gym looks like equal parts Olympic training facility and old warehouse—here, exercisers hoist themselves up rows of pull-up bars, grunt around a collection of kettlebells, and hop through jump-rope routines. This low-tech setting is typical of all true CrossFit gyms. Though the equipment may be basic, the results are not: CrossFit workouts develop all measures of physical fitness—from power to cardiovascular endurance—through workouts that are broad, general, and inclusive. Every exercise is scalable to a version that clients can complete—a pull-up, for example, can be scaled back to a negative pull-up, a static hang, or body-weight row with gymnast rings. It can also be scaled to a more challenging version, such as the kipped pull-up.