Example 1 of substantially Limiting.

Example 1 of substantially Limiting. Claimant (CP) has a permanent knee impairment that causes him pain when he walks for extended periods. He can walk for ten miles at a time without discomfort, but he experiences pain on the eleventh mile. CP's knee impairment does not substantially limit his ability to walk. The average person in the general population would not be able to walk for eleven miles without experiencing some discomfort.