Section 504 of the Rehabilitation Act of 1973 and the Americans with Disabilities Act (ADA) of 1990 define disability as "a physical or mental impairment that substantially limits one or more of the major life activities." Major life activities include, but are not limited to, caring for oneself, performing manual tasks, walking, seeing, hearing, speaking, breathing, learning, working, sitting, standing, lifting, reaching, and sleeping. This definition of disability includes mental/emotional processes such as thinking, concentrating, and interacting with others. The ADA protects individuals from discrimination if they have a record of such impairments or are regarded as having such impairments.