Why are some people so lazy? Is there a couch-potato gene? br Check out 'The Sports Gene': br Science Of Productivity: br SUBSCRIBE: br br Special thanks to David Epstein for help with this episode: br br ---FOLLOW US! (Links below)--- br Instagram and Twitter: @whalewatchmeplz and @mitchellmoffit br Clickable: and br br Facebook: br Twitter: br Tumblr: br Vine: Search "AsapSCIENCE" on vine! br br Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz). br br Further Reading-- br br Neurobiology of Mice Selected for High Voluntary Wheel-running Activity br ... br br Mice from lines selectively bred for high voluntary wheel running exhibit lower blood pressure during withdrawal from wheel access br ... br br Patterns of Brain Activity With Variation in Voluntary Wheel-Running Behaviour br ... br br Current understanding of the genetic basis for physical activity. br ... br br Genetic influences on exercise participation in 37,051 twin pairs from seven countries. br ... br br Does the difference between physically active and couch potato lie in the dopamine system? br ...