(a) Non-severe impairment(s). An impairment or combination of impairments is not severe if it does not significantly limit the claimant's physical or mental ability to do basic work activities.

(b) Basic work activities. Basic work activities means the ability and aptitudes necessary to do most jobs. Examples of these include—

(1) Physical functions such as walking, standing, sitting, lifting, pushing, pulling, reaching, carrying, or handling;

(2) Capacities for seeing, hearing, and speaking;

(3) Understanding, carrying out, and remembering simple instructions;

(4) Use of judgment;

(5) Responding appropriately to supervision, co-workers and usual work situations; and

(6) Dealing with changes in a routine work setting.