Pumped

In lead climbing and sport climbing, "pumped" refers to the feeling of extreme fatigue and muscle soreness in a climber's forearms. This occurs due to the build-up of lactic acid and the overuse of the muscles when gripping holds for an extended time. Being pumped can significantly impact a climber's ability to maintain grip strength and continue up the route, often forcing them to take a rest or risk a fall.

Examples

In lead climbing, a climber becomes pumped when their forearm muscles get fatigued from gripping holds for an extended period. This muscular exhaustion can make it difficult to hold on, clip the rope, or continue climbing smoothly. In sports climbing, feeling pumped often occurs on long, sustained routes where climbers need to maintain a strong grip on overhanging or vertical walls. Managing pump involves efficient movement, strategic rests, and conserving energy to delay muscle fatigue.