Actually, in my opinion, there is nothing wrong with this kind of fitness. You can exercise with your boyfriend, and often you can better understand his self-disciplined personality, which will often warm up your feelings. It seems really beautiful to me. At the same time, you should also see this clearly and don't care too much. Sometimes you can try to exercise with your boyfriend and work together to make your body better, so that you two can get better and better.
Of course, maybe you really don't like going to the gym, so you need to calm down and communicate with your boyfriend, because if you tell your boyfriend directly and blindly that you don't want to go, it will probably make your boyfriend feel embarrassed and hurt your feelings, so don't refuse your boyfriend and boyfriend easily, just make clear your personality hobbies and habits, sometimes if you do.
So I believe that no matter what kind of thoughts and personality, your boyfriend will tolerate you and understand you. Many times, just tell your boyfriend what you think. At the same time, I also hope that each of us can face life optimistically and live actively. Perhaps, good fitness is a way of life in many cases. Let's go I wish you more and more happiness in life.