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"Arnie" Sends the Workout and Logs Every Set: A Grok Bot Personal Trainer Beat the App He Spent Months Building

  • Level Beginner
  • Setup~30 min (estimated)
  • Evidence Anecdotal
  • CostNot stated in source
  • No-codeYes
Grok BotSource-linkedBeginner-friendly

What they did

Want a trainer who texts you the plan every day? He made a Grok Bot called Arnie with an Arnold Schwarzenegger personality. He gave it his routine (push day Monday, pull day Tuesday and so on), when he likes to train and what equipment he has. Every day Arnie messages him some motivation and the full workout. He logs each set as he goes, Arnie gives tips for the next set, and at the end it saves all the sets and any personal bests to a spreadsheet in his Google Drive. He says it works better than the app he spent months building.

How it went

A daily workout, set-by-set coaching and an automatic training log.

Worth knowing

  • One Reddit comment. A bot isn't a doctor or physio. Stop if something hurts, and check with a professional before starting a new program with an injury.

Prompt

Cleaned version rewritten from the source — not a direct quote.

Be my personal trainer. My split is [days and muscle groups], I train at [time] and I have [equipment]. Every training day at [time], send me the workout with sets, reps and weights. As I log each set, give a short tip for the next one. When I say done, add every set and any personal best to [Google Sheet] and adjust next week's weights.

Recommended

Try it in Grok Bot

  1. Copy the prompt (button below).
  2. Open Grok Bot chat and paste it. Replace any [bracketed] placeholders.
  3. Connect the listed tools (Google Drive, Google Sheets) as connectors when Grok Bot asks.
  4. If the task repeats, ask: "Make this a daily routine."

Alternatives: the same prompt works in Claude, ChatGPT Agent, OpenClaw.

Set it up

Tools: Google Drive, Google Sheets · Stack: Grok Bot + Google Sheets

  1. Read the original source for full context.
  2. Connect the tools your agent needs.
  3. Paste the prompt and replace [bracketed] placeholders.
  4. Run once manually and check the output before scheduling it.

Generic suggested steps, not from the source.

Evidence

First-hand Reddit comment in r/GrokBot: daily workout messages, set logging with tips, sets and PBs saved to Google Drive; replaced his own app

Source: Reddit · 2026-10-21 · Verified by us: not yet · Report broken or outdated

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