There is a really tremendous amount of rubbish talked about masculinity these days. Its basis is the fact that modern men are much more effeminate than men of the past - and there seem to be many causes of this change: both cultural and biological-medical (and the cultural would not be possible without biological facilitation).
But masculinity was always known as a consequence not a cause; something that was not sought head-on and for itself; but which arose as a result of other priorities.
Modern men cannot become genuinely masculine by changing diet, drugs and weights; because these are themselves evidence of effeminacy!
The idea of a real man of the past brooding over such matters, of micro-monitoring and micro-managing his food, health, physique; being motivated by obsessing about his looks, and measures of sports performance (and comparing with other men) is itself extremely effeminate behaviour!
We live in a world of extreme evil, a world in which there is one thing needful - which is to be a Christian, and as good a Christian as you can...
From this all else follows, and without it - well, nothing really matters because you will be fighting on the side of evil and yourself being corrupted, week-by-week. Every 'self-improvement' will be harnessed against God and the good.
To focus on masculinity, to try and become more masculine, is corrupting; it elevates an inessential means to the level of an end; it makes a purpose of something which should be a by-product and may not be required.
There are very few good men now; and of the few that I know - none are obsessing over their masculinity (and those who are, are slipping, perceptibly, week-by-week, away from God and towards The World).
We all must have courage, but courage is not about masculinity. Each person's required courage is matched to his mind, body and situation - and is not dependent on these being in-place.
Effeminate men need courage just the same; and masculine virtue will be improved only by courage in pursuit of Christian virtue.
All the rest is just lifestyle, hobbies, addictions, perversion or therapy - it may be 'needed' for such reasons, but should not be allowed to become a culture, or regarded as an end in itself.
Here-and-now things are very clear and very simple; and what we should be doing is laid out before us. Doing it is very difficult, and everybody will lapse - most will lapse frequently.
It is understandable that people should seek for easier surrogate activitess - and expend time, energy and resources on what they claim to be proxies for faith, hope and charity - and should get caught-up in groups that encourage each other...
It is understandable; but all sin is 'understandable'. Sin is turning away from God, working against the Good and creation - and in 2021 the System is sin-promoting; there are innumerable, continuous temptations to put The World above Heaven - and (temporary) rewards for doing-so.
It is part of the task of our times that these temptations be recognized and lapses repented.
But while we cannot avoid sinning (because we are all sinners, by our nature, as Jesus made clear) we have no valid excuse for systematically advocating sin by our voluntary efforts.
So let's all try our best to avoid advocating plans and schemes and recipes for promoting masculinity, eh?