People who are happy may be able to get more out of their workouts too. “You will get more reps in, more steps in or more yoga in,” clinical psychologist Dr. Cali Estes told us. That’s because working out increases the amount of serotonin and dopamine that our brains make, two of the four happy chemicals that our brains constantly crave. This explains why many people claim that exercise quickly becomes addictive.
If thinking about hitting the gym isn’t such a happy thought, Dr. Estes suggests cranking up your favorite tunes as you work on getting toned. “The music makes their serotonin go up and they feel happy,” she said.