Studies have found that our level of motivation for exercising is partly influenced by our genes. So how your body physically holds up during a workout and how you mentally respond to the challenge both come down to your DNA. Certain variations of genes like LEP or SGIP1 were found to be associated with a greater motivation to exercise. But, certain others like LEPR were found to be related to less motivation for exercise. These studies indicated that up to 50% of our like or dislike for exercise is due to these genes. But don't confuse Exercise Aversion with a lack of motivation. Exercise Aversion is stronger than a simple lack of motivation since it has a genetic basis. People who have a genetic variation that contributes to Exercise Aversion will have less of a desire to exercise, and it might even be their least favourite activity.