Rock Climbing

Move · High-Intensity · Movement, Typed Supps

A strength sport where working out the route limits you as much as your body does.

Stage by stage

Warm-up (Fingers and forearms first): Finger tendons and pulleys take concentrated load, so a gradual warm-up on easy holds is standard practice.
During (Grip is usually the limiter): Forearm endurance typically fails first, and the characteristic pump is local metabolite build-up rather than whole-body fatigue.
Technique (Legs do more than expected): Skilled climbers push with the legs and keep weight over the feet; novices over-grip and pull, exhausting the forearms fast.
Months later (Tendons adapt slowly): Strength improves faster than tendon and pulley tissue adapts, which is why finger injuries are so common in enthusiastic beginners.

Muscles trained

Primary: forearms, lats
Secondary: abs, biceps, glutes, rotator cuff

Intensity

8 METs (Rock or mountain climbing (Taylor Code 470) (Formerly code = 17120)).

Time to effect

Months: Technique improves quickly; strength over months, with tendon adaptation slower still.

Related supplements

Common myth

“Climbing is an upper body and grip sport.” In reality: Skilled climbers drive with their legs and keep weight over their feet — the arm-dominant hauling that exhausts beginners is the main novice error.