A LOT of walking and presenting as feminine or masculine is completely dependent on social conditioning, and how they perceive themselves, and how that self-perception has formed social habits. Some of it is biology, but a lot of it isn't, and WILL change depending on how one sees themselves.
Guys grow up being taught that being confident and strong and dominant is a desirable trait. And when you're a guy, you therefore feel strong and confident, and your walk and gestures show it. Men tend to own the space that they are in, not shy about talking it up, and when they talk to others you can tell that they have a confidence that says that they deserve to be heard.
Women, on the other hand, grow up being taught that being "nice" is the most desirable trait. So when you're a girl, you feel like you're not as strong, like there are other stronger people out there, and that you need to be "nice" to others rather than assert yourself. And your walk and gestures also show it. Women are trained to not take up space... to shrink inwardly, and to not intrude on the space of others. And when they talk, they use a lot of diminutive non-confident language like "kind of," and don't make direct orders but rather ask others "do you want to?" using more inclusive language and gestures that asks others what they want to do, and reaches out to them, rather than standing at a distance and making direct orders. (That's what the feminine hand gestures really are... it's a subconscious desire to reach out and include the audience in what you're saying.)
And again, a lot of this is just self-perception, and social conditioning. It is something that will come with real-life experience over time. As HRT progresses, and muscles shrink, and you start to view yourself as female, a lot of that inward-shrinking behavior will come naturally, because you don't see yourself as that dominant male person anymore.
And no, it's not just biology. Some of it is, because hormones and brain development play a HUGE part in how one will eventually feels about themselves and how they will fit in socially. But basically that's all that the body gestures are, are outward signs of how one feels about themselves on the inside, and feels about where they fit on the social spectrum. And these body gestures can and do change depending on life circumstances and our ever-changing sense of self-perception. Often times abuse victims suddenly develop very timid and nervous body gestures, or some shy socially-awkward girl suddenly gets much more confident body gestures as she succeeds in the world and starts feeling better about herself. And so likewise, this is one of the most important things that comes with RLE... the female social conditioning. There's a reason why a lot of people say they feel like there's a total disconnect with their old lives once they've transitioned fully. Some of life's most basic habits change completely.
