Fitness is hard because there’s very little to zero immediate benefit particularly if you are out of shape. I also think for many things, particularly those related to lifestyles and behaviors, the goal is to do it often enough so that it becomes a habit. Most people probably don’t enjoy brushing their teeth, but we also don’t think much about it, we just do it. I feel the same way with running, I don’t think I enjoy it, certainly not all the time like in winter, but it became a morning routine that is easy to execute.