It actually depends on the type of individual involved and this is why I will say it gene sometimes plays a role in one's life to either embrace or avoid exercise but this chance is highly very slim because it actually depends on what you love doing and what you want for yourself. The fact is that most people exercising themselves today are actually doing it to achieve a specific goal such as having a good body shape, burning one's calories or fat and staying healthy.
Another important factor to consider is that most of the people you find at the gym aren't engaging in exercise because of the type of gene or traits they inherited because some people's parent don't really exercise much while some don't even exercise at all.
We can actually conclude by saying exercising the body is actually what you develop by yourself provided you also develop the interest for it. You can actually do anything you want to do provided you have interest in what you want to do. Most people exercising their bodies had to develop the interest for exercise and not actually focusing on the traits or gene they inherited from their parents.
Thanks for reading and I hope this helps.
Yes it does play a role. While it is true that a certain percent of the variation in human physical activity can be inherited, but the genetic sources of voluntary physical activity also need to be properly understood. The drive and reward centers and the motor system in the brain interact to cause people and animals to voluntarily engage in, or purposely avoid exercise. The activity of neurons in the brain that regulate dopamine, in particular, seems to play a role in providing the motivation/enthusiasm to exercise. Dopamine is a neurotransmitter that helps control the brain's drive, pleasure and reward centers.
The personality and behavioural traits, such as goal-setting, self-regulation, fitness and skill levels, social influences, access to fitness activities, and other factors further weigh on an individual's propensity toward voluntary exercise. The variations in genes that encode for dopamine and other neurotransmitters linked with physical activity account for low or high physical activity directly. These genes also act indirectly, by their associations with people's acquired motivation to be active and also with select personality traits.