Over 76 million individuals in the United States (that is one in every four Americans) have experienced pain that lasts longer than 24 hours. Millions more suffer from acute pain every day. According to recent statistics put forth by the National Institutes of Health, "pain affects more Americans than diabetes, heart disease, and cancer combined. Emotional stress such as anxiety and depression play a key role in experience of pain. Pain is momentary. If you quit, it will last forever.