With several things, there is usually pain before anything is gained. For example, childbirth is painful but afterwards parents have a beautiful baby.
To achieve goals, we have to make sacrifices. If we want our blog to succeed, we put in the time to make improvements. If we want a better job, then we do what we can to achieve that goal. We could go back to get an education or dedicate our time to getting promoted.
I’m not an expert on exercise. In a way, Jane Fonda is right. If we don’t make an effort to lose weight, we won’t see results. I’m not sure if we should feel a lot of pain while exercising. It doesn’t sound healthy. We should modify our workouts according to what we can do. Again, I’m not a trainer or a doctor. It’s just an opinion.