Fitness as a bid for self-sufficiency
Compulsive exercise can be a hidden attempt to need no one and to outrun death. That pursuit can keep a person from facing that they depend on others and that they will die.
Performance

A wry, searching history of one person's lifelong pursuit of fitness, transcendence, and self-knowledge.
Compulsive exercise can be a hidden attempt to need no one and to outrun death. That pursuit can keep a person from facing that they depend on others and that they will die.
A personal obsession with getting fitter can be one strand of a much older belief that the self can and should be endlessly bettered. The author traces that belief back to the progressive spirit of the Romantic and Transcendentalist writers.
The harder you work at perfecting yourself, the more your own self-focus starts to block the very thing you want. Constant thoughts of achievement and of self can freeze you in place instead of moving you forward.
Peak physical performance can come from not trying, and from not even thinking about the task. Self-conscious monitoring gets in the way of the body doing what it already knows how to do.
The author argues that the deepest strength lies not in a sculpted body but in facing how much your life is bound up with other people. This dependence offers no transcendence, yet it is what matters most.
People often take up exercise less for health than for some inner change, as a way to make a small, frail self feel bigger. The physical routine stands in for a spiritual or psychological hunger.
No one can fully escape their own body and point of view; each person lives shut inside their own skin for life. Exercise and transcendence promise a way out, but this basic isolation stays.
You can master a combat skill fully and still find you have no wish to use it in a real fight. The value turns out to lie in the practice itself, not in the power it seems to promise.
After a lifetime of chasing a better body, the goal shifts to valuing the body and the life already in hand. That ends the endless upgrade loop rather than adding one more goal.