The Climb is a core and cardio circuit that never lets you leave the plank. It runs entirely on one family of movement: 10 climbers, 10 slow climbers, 10 more climbers, a 10-count plank hold, 10 climber taps, another 10-count hold, and a final 10 climbers to top out. One position, held from first rep to last.

The design is an exercise in tempo manipulation. Regular climbers are quick and cardiovascular; slow climbers take the same movement and stretch it out, converting a conditioning drill into a strength drill where your hip flexors and core control every inch of the knee drive. The plank holds that follow strip away movement entirely, leaving pure isometric bracing on shoulders that are already burning. Climber taps then add a coordination tax - lifting a hand off the floor while a knee drives in - so your core must resist rotation on three points of contact. Same position throughout, but the demand keeps changing shape, which is what makes a long ascent hard: the mountain doesn't change, your legs do.

Keep your hips low and level in every variation - climbers lose most of their value when the hips pike up and the knees just swing underneath. In slow climbers, take a full two to three seconds per knee drive and place each foot back deliberately. During climber taps, drive the knee and tap it with the opposite hand while keeping your shoulders square to the floor. On the holds, push the floor away so your upper back doesn't sag between your shoulder blades.

The summit is just the place where you finally stop climbing. Keep going until you're there.

Make it Harder: Double both plank holds to a 20-count.

Make it Easier: Do the whole circuit with your hands on a sturdy elevated surface like a couch armrest or low table.