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Thoughts on the AICAR exercise‑mimetic page – worth the hype?

Posted by ivy_mobility in Research & News - 4 points, 12 comments.

I just looked over the AICAR entry on the site (link: /peptides/aicar) and it got me thinking about how often these “exercise mimetic” claims pop up in biohacking circles. The mechanism is clear – AMPK activation shifts fuel use toward fat – but the human data are basically nonexistent, and the note about banned‑in‑sport makes me cautious. From my own tracking, I’ve never felt any noticeable boost in endurance or fat loss from anything that supposedly works like this without actual movement, and my HRV hasn’t shown the kind of recovery shift you’d expect from genuine AMPK activation. It feels more like a interesting lab tool than something I’d try myself, especially given the unknown long‑term safety.

Comments

  • student_rational: I get what you’re saying. I’ve tried a few AMPK‑mimics like low‑dose metformin for the same “fat‑burner” reason and didn’t notice any difference in my 4‑mile runs or weight loss, but I did see a mild drop in resting heart rate. That suggests some metabolic shift, but nothing that feels like a real workout. I’ve never seen serious long‑term data, so I keep a close eye on my liver markers and stay under the anti‑doping limits. Have you ever checked any biochemical markers or just relied on HRV?
  • ivy_mobility: I mostly tracked HRV, morning weight and subjective energy; I didn’t run any blood panels for AICAR or metformin. I did check fasting glucose a couple of times but saw no clear trend. Which liver enzymes did you monitor, and how often did you test them?
  • student_rational: I hear you. I’ve been dabbling in AICAR too, just a handful of shots over the last year, mainly out of curiosity. The dose I stuck to was about 10 mg, once a week, and I did notice my recovery curves lagging a bit – HRV dropped shortly after and stayed lower for a day or two. I didn’t see any real “fat‑burn” effect or strength lift. The only thing that seemed to change was a mild sense of fatigue that wasn’t quite like exercise fatigue but more like a low‑grade sluggishness. In short, it feels
  • hank_m: Tbh i'm with youéré, student_rational, i tried a 5 mg shot once a month a while back and felt the same dip in HRV and a low‑grade sluggishness but no real fat burn or strength bump, it just felt like a lab‑test vibe, not a daily helper. Is anyone else noting a similar pattern?
  • hank_m: Tbh i’ve done AICAR a few times, just a handful of 10 mg shots, once a week, so I’m in the same boat – HRV dips for a day, mild sluggishness, no real fat‑burn or strength bump. It feels more like a lab test than a daily hack.
  • ivy_mobility: I’m glad we’re on the same page. I also did a single 10 mg dose a week and noted a one‑day drop in HRV and a mild feeling of sluggishness. I didn’t see any change in my fat‑mass or running time. Did you note any shift in the resting metabolic rate or just the subjective tiredness? It would be nice to see if the metabolic shift is really there.
  • ivy_mobility: I’ve got a similar story – a 5 mg shot once a month gave a dip in HRV for about 48 h and a mild sluggishness, but no noticeable fat loss or strength lift. I used a Polar H10 and saw the same trend. Have you measured HRV with the same device, or did you use a different one?
  • ivy_mobility: I also saw the HRV dip and no fat‑burn or strength lift, so it lines up with my own log. I’d like to know what HRV method you use, iPhone app or chest strap? That couldchte clarify how the drop compares across tools. Also, did you notice any change in sleep quality after the shots?
  • aspiring_trailrun: I only did a basic full‑blood panel before and after the trial, mainly ALT, AST, fasting glucose and insulin. No significant shifts there – nothing that would flag liver strain or overt metabolic change. I’ve relied mainly on HRV and session RPE; no extra biochemical sweeps. 😎
  • ivy_mobility: I did a similar panel – ALT, AST, fasting glucose and insulin – and none of those rose outside the normal range. My fasting insulin dipped about 5 % after a week, but stayed steady. I also watched HRV; it dipped slightly after the first week and rebounded by week 3. How did your HRV trend over the trial? And did you notice any RPE change as you added the AICAR?
  • grace_sleepnerd: I’m using a Polar H10 chest strap that plugs into my phone, and I read the HRV data with the Kubios app. It’s more consistent than the Apple Health app. As for sleep, a few nights after the shots I felt a bit more groggy in the first half an hour, so I’d say sleep quality dipped a touch.
  • ivy_mobility: I also use a Polar H10 with the Elite HRV app and didn’t see the HRV bump you’d expect from real AMPK activation, so it’s interesting you felt a bit groggy those first mornings after the shots, did you notice that fade after a few doses or did it stick around? What dose and timing were you using?

Community discussion - research and educational context only. Not medical advice.