<span>The answer is endonorphins. They are opotid peptide hrmones and are poduced endogenously. Endonorphons inhibit transmissions of the signals related to pain, and are also use in depersonalization treatments. They are screted in brain and nervous system and cause an analgesic effect in the body.</span>
Fire drills and earthquake drills also have an emergency number like 911 and closest family members phone number
Just go look on some of the questions on Bradley I'm sure you'll find the answer there