I haven’t read anything yet but Mark’s advice is gold.
People want results. As a trainer, your body and performance is your first piece of marketing. Next, and probably more important, is your clients’ bodies and results. People don’t care how or why; they just care that it works. Your long term clients might become interested in more specific information, but give this to them when they’re ready and in small doses.
The typical gym goer is at point A and they want to get to Z. They don’t care about steps B thru Y. They just want Z. It’s your job to know about B-Y and take them through those steps. They don’t have to know what step they’re on; they just need to know they’re getting closer to Z.
Keep writing and posting. Keep 90% of it simple and sprinkle in the advanced stuff for the other 10%. It’ll show that you know your stuff but won’t overwhelm people and turn them off.
Here’s an example of a possible exchange with a female client who wants to lose weight.
Trainer: We’re going to do squats today.
Client: Why? I don’t like squats.
Trainer: Your goal is to lose weight. Squats train multiple muscles at the same time. This will burn more calories now and later. As a bonus, building muscle in your legs will make them more defined and help with that toned look.
(The exchange could end there, but let’s assume it continues.)
Client: But I don’t like squats. They’re awkward and hard.
Trainer: Would you rather do hip thrusts, extensions, and leg curls? Doing squats is like doing all three of those in one movement. Three exercises or one. Your call.
(Okay, so I might be a bit snarky, but it’s still a valid example.)
A smart guy might make the mistake of explaining that squats are a foundational movement and that the client needs to build a strong foundation and so on. They don’t need to hear that. They just need to know why the movement will help them with their goals.
Producing content for the 10 people who pay you the most is brilliant advice.