That’s fine. There was just a big misunderstanding about what “an unproven guy writing on the Internet” meant.
The information they’re providing is useful and/or interesting and/or entertaining.
In a nutshell: Put out good shit and people will find you.
“Standing out” is a dangerous term, because some people stand out for the wrong reasons. You don’t want to go gimmicky, which is very easy to do in today’s social media world. Again, see nutshell above.
You’re getting ahead of yourself. First, determine your reader. If your target audience is “people who lift weights”, you’re finished before you begin.
The target demo for bodybuilding .com is different than the target demo for T Nation which is different from BoxLife which is different from Runner’s World. You don’t have to necessarily tailor your writing to what an audience wants, content-wise, but you do need to know who you’re talking to in the first place, otherwise you’ll be rambling and unfocused. Even if your target audience is “the 27-year old version of me”, it’s something.
Next (or arguably the real first priority), figure out why you’re writing. Do you have an intrinsic drive to share your unique knowledge? Is writing a promotional method to get more coaching clients? Are you just a chatty dude who enjoys writing? That’s going to influence everything from the topics you cover and publishing frequency to your tone.
After you know who you’re talking to and why, it’ll point you in the direction of what to say. If what you’re saying is really solid, readership will grow.