As discussed previously, Social Security Disability and SSI claims hinge on the Residual Functional Capacity (RFC) of the claimant and whether work exists in the local or national economy in light of that claimant's RFC. I also recently discussed the different exertional levels the Social Security Administration utilizes: sedentary; light; medium; heavy, etc. The exertional levels are most often defined in terms of strength or ability to walk, stand, or sit. However, other activities can affect the RFC of a claimant in terms of the listed exertional levels. Some of these activities fall under what are defined as postural/manipulative activities or limitations. Examples of these activities are: climbing, balancing, stooping, crouching, crawling, pushing/pulling, kneeling, reaching, and handling.