Rock climbing can put strain on your feet, but whether it causes damage depends on various factors. The repetitive pressure and friction can lead to calluses, blisters, and even corns. However, these issues are typically temporary and can be managed with proper foot care and footwear. The use of climbing shoes, which provide a snug fit and a specialized rubber sole, can help improve grip and protect your feet. It's important to listen to your body and take breaks if you experience discomfort or pain.