It is basically like Fight Club if the first two rules were the opposite.
[0] https://www.amazon.com/Congruent-Exercise-Weight-Training-Ea..., "Congruent Exercise: How To Make Weight Training Easier On Your Joints"
Perform your prescribed duty, for action is better than inaction. A man cannot even maintain his physical body without work.
I think some people just despise physical activities, like there are a lot of people who just refuse to think.
Swimming, Soccer, Rock Climbing, Hiking, Kayaking, Free running, Martial Arts, Fencing, Yoga, Surfing, Dancing (Samba, Ballroom, Contemporary...), Long walks, Cycling.
My favourites are cycling because I feel so free and I love the sensation of speed and climbing because I have a natural talent for it and I love the feeling of getting to the top.
There is more to "I hate physical activity" than the gym, too. Some of us have seriously been looking for the proverbial "something you enjoy" for decades and haven't found it.
You can also strap a competition car to your arse, and try to beat the quick peeps at an autocross track.
The key mental switch for me was leaving behind the mindset of accomplishment through grind, tough, suffer, and instead train, train, train, and take it easy & enjoy yourself.
"The will to win means nothing without the will to prepare"