EDITOR’S NOTE: The podcast Chasing Life With Dr. Sanjay Gupta explores how to stay motivated to exercise. You can listen to episodes here. During the middle of winter in the Northern Hemisphere, the ...

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(CNN) — During the middle of winter in the Northern Hemisphere, the days are cold, dark and short. It’s not an inspiring time to accomplish much of anything, much less those New Year’s resolutions ...

A study exploring the mechanisms behind why cognitive performance improves in response to exercise, has found that dopamine plays a key role. A study exploring the mechanisms behind why cognitive ...