Working with a personal trainer can be expensive and time consuming. But can AI train me? Let’s find out…

Grok As My Personal Trainer

This morning, I typed a week’s worth of workouts into Grok 3, my favorite LLM at the moment. I gave Grok my goals: general fitness, longevity, and bigger muscles. Because hey, why not?

Are my workouts on point? Or am I coasting?

Let’s see what Grok has to say…

Coach Grok Tells Me to Step It Up

Grok likes my program for the most part, but recommends a few changes.

It wants me to up the volume slightly on zone 2 and HIIT. That’s something I may do.

It also advises me to reorganize my lifts a little. It recommends some interesting new lifts to try that I haven’t heard of, such as the Romanian Deadlift and Bulgarian Split Squat.

That’s actually one of the great things human trainers do: introduce you to exercises you’ve never heard of.

For upper body, it recommends going from my current 12 sets (6 pushing, 6 pulling) to 16 sets. Each exercise will include 2-3 sets, spread across different exercises.

For lower body, it recommends going from my current 6 to 9 sets. That also involves 2-3 sets per exercise.

So, Am I Gonna Do It?

I hate being told what to do. I also dislike spending more time in the gym…I find it boring.

But I’m gonna give it the old college try! After all, it’d be nice to get in better shape.

I estimate that all told, this will take me an extra 20-30 minutes per week. When you think about it, that’s not that much!

Wrap-Up

Human personal trainers run $50-100 per hour. Grok just did a lot of that job for free.

So, are human trainers doomed?

Not exactly. I think most people hire a trainer because they’re looking for someone to motivate them and hold them accountable.

I don’t need that. I hold myself accountable. I just want information.

But there are enough folks who want that motivation that trainers will be making good money for a very long time.

Do you use a human trainer? Would you try an AI trainer instead?

More on tech:

Using Grok 3 to Manage My Stock Portfolio

Scouring the Internet with Grok DeeperSearch

Testing the New Meta AI App

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