Is the couch calling you when you’re meant to be doing cardio? You may feel lazy, but actually your brain is to blame. Researchers from the University of British Columbia in Canada recruited young adults, and had them play a computer game where they had to move an on-screen avatar as quickly as possible toward pictures of physical activity and away from those of inactivity, and vice versa, while their brains were scanned. Even though participants were generally faster at moving towards pictures of physical activity, their brains had to work harder in the process. Researchers say it suggests that “our brain is innately attracted to sedentary behaviours”, but add that knowing this means it may be easier to overcome the next time you have to hit the gym.