You obviously have little to no idea how fitness works. Probably read some articles with false information for your own subjective validation.
Damn, that got insecure real quick, didn't it?
You have to put in the effort to achieve your ideal physique, but once you've reached that point you don't magically no longer have to put in any more to maintain it. It still takes time, effort, and energy to stay fit. This isn't an opinion, it's just a basic fact.
If you no longer have to put in that time, effort, or energy in maintaining, there would be many other things you could do with it. Dietary restraints no longer being a concern is only a small one of the many benefits even a fit person would receive from this. You don't have to be a lazy fatass for the thought of "I don't have to go to the gym for an hour today" to be appealing for any number of various reasons, such as picking up a new hobby.
I'd enjoy that. I could make money doing whatever I wanted. I could spend my time doing anything I wanted.
Also, If I'm tired as I become immortal, will I be tired until I choose to die? ---
Ignore when people say that the title length is not important, that a title should just convey what the game is about. They're just jealous theirs isn't as long