| http://www.w3.org/ns/prov#value | - The Mayo article[4] continues: ???Exercise may???boost feel-good chemicals like endorphins, release tension in muscles, help you sleep better and reduce levels of the stress hormone cortisol. ???All of these changes in your mind and body can improve such symptoms as sadness, anxiety, irritability, stress, fatigue, anger, self-doubt and hopelessness.???
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