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Being optimistic has repeatedly been linked to a stronger immune system, longer life, higher quality of life, and a host of other health perks. And you don't have to play Pollyanna to reap the benefits of having a positive attitude. If you weren't born with the sunshine gene, swinging a kettlebell might be just as good. Researchers found that exercise "promotes positive thinking and encourages self-efficacy".
Make it happen: The key is consistency. Working out over time can help retrain your brain to look on the brightside. Scientists say it takes about 21 days to restructure your neural cortex, which is a fancy way of saying "make a habit."
Research reveals surprising perks that'll make you crave the gym
Coregasm, Runner's High, and More Workout-Induced Pleasures