If you’re not super active but you want to be it might be your brain’s fault. Researcher from the University of Geneva and the University Hospitals of Geneva, Switzerland, looked at the neural activity of people faced with making the choice between physical activity and doing nothing. They found the brain requires far more resources when it comes to making a decision then requires anything than the bare minimum effort. This results in a struggle between the desire to do nothing and the physical activity. This is consistent with the idea that our ancestors had to avoid unnecessary physical activity in order to increase their chances of survival– the complete opposite of what’s needed in our modern societies.