The Science of Laziness
There may be a reason you're being lazy—it could be genetic. Scientists have discovered a "couch potato gene."
Key Facts In This Video
Messages of pleasure are derived from the brain's dopamine system. (0:22)
There's a direct genetic link between the motivation for exercise and our parents. (1:09)
External environmental factors can also play a role in boosting or diminishing the desire for physical activity. (1:59)