Women lifting to become "muscle mommies" as a form of transgenderism (
https://x.com/escapefrommelos/status/2036803466107191560) is one of my theories, but I'm sure somebody proposed it before I did.
Aside from narcissistic autoeroticism, women are retards who think traits they find attractive in men are traits that men find attractive in women; they wear heels (height), get (resources), (dangerousness/ruggedness), buccal fat removal (chiseled features), etc. These are all forms of soft transgenderism resulting from the breakdown of gender norms.
When women learn that heterosexual men are generally not attracted to stereotypically masculine traits, they respond with total bewilderment ("But I'm a 35-year-old DOCTOR! Why can't I find a husband?!") or belligerent obstinance ("A REAL man would find [masculine trait] sexy, but you're just a small penis porn-brained incel").
All of these horrifying trends are amplified by female conformism and their obsession with status. For example, it's plausible that the astronomical whorishness of women online today was at least partially caused by the popularity of Onlyfans girls, leading to runaway whoredom. Women see that nudity = "status" (in their minds, followers + male attention = status), and conclude that they must post nudes to compete and become "high status."
Many of the behavioral traits that correlate with being an internet whore also correlate with trooning out in the gym, getting tattoos, piercings, etc., which reminds me of the Spiteful Mutant Hypothesis (or https://link.springer.com/article/10.1007/s40806-017-0084-x: Dysgenic people reach critical mass in a society, acquire some level of cultural dominance, and negatively influence the behavior of would-be normal people around them. Those who resist these trends are generally theorized to be more genetically healthy (mentally stable, etc.), although this may not necessarily be the case; natural nonconformists (autistics, psychopaths, etc.) may resist these trends out of pure disagreeableness.
(encouraging unattractive behaviors among sexual competitors, distinct from being a spiteful mutant) undoubtedly contributes to these trends, but I'm unsure to what extent. "Wow, girl, you look GREAT with 12-year-old boy hair. You should go bald next. Fat? No way, you look beautiful. In fact, you should eat even more!"
Regarding women trooning out in the gym, specifically: Many are anorexics for whom lifting became a "healthy" (obviously, they are not healthy, they are infertile) outlet for their body dysmorphia and obsessive-compulsive thinking around food and weight.
Anyway, to conclude: Every healthy society in human history has been structured in a way that mitigates the natural retardation of women. We must repeal their rights for their own good.