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Biohackers claim this handy test predicts longevity — a surprising $10 tool helps you train

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Cite

Salemann, M. (2026, September 18). Biohackers claim this handy test predicts longevity — a surprising $10 tool helps you train. New York Post. https://nypost.com/2026/09/18/shopping/grip-strength-is-linked-to-longevity-a-10-amazon-tool-can-train-it/

Dated when The Aporia collected the article, usually within hours of publication. Check the original for its exact date and byline.

New York Post · collected 2026-09-18 · by Miska Salemann

Quick Summary

Biohackers like Bryan Johnson claim that grip strength can be a better indicator of overall health and longevity than muscle size alone. A $10 grip-strengthening kit on Amazon, which is currently marked down 62%, has received positive reviews from users who report significant improvements in their hand strength after consistent use. The article highlights the ease of use and portability of this fitness tool ahead of Prime Day deals starting October 6th and 7th.
Written by AI on 2026-09-18, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Biohackers like Bryan Johnson claim that grip strength could be a better predictor of longevity than muscle size alone. According to Johnson's post on X (formerly Twitter), "grip strength predicts longevity better than being jacked." Research supports this, showing that grip strength correlates with bone density, nutrition, hospitalization rates, and mortality. A FitBeast Grip Strengthener kit is currently available for just $10 on Amazon due to a 62% discount before the upcoming October Prime Day, which starts on October 6 and 7. Reviewers report significant improvements in grip strength after consistent use of the tool.

Written for “Biohacking Longevity Test” on 2026-11-05, grounded in this article and the 0 other(s) covering the same event.

Story

📰 Biohacking Longevity Test
Health · 1 article(s) covering the same event.

Compared with similar articles

Nothing to compare against. No article is close enough to this one for the pipeline to have linked or judged the pair.
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
17
sentences that state something as happening or true
Uncertain
24%
4 of 17 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
66/100
New York Post's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Health
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-09-18 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

New York Post · 17168 article(s) · 36 correction(s) detected
Running correction rate · 36 correction(s)

Who wrote this

Miska Salemann
49 article(s) here · 1 carrying a prediction
🔮 If you’re a savvy shopper hunting for an actual deal, you may want to consider buying in bulk rather than stocking up on multiple bags.
🔮 The SINOPHANT High Waisted Leggings may not come with a luxury logo, but fitness fanatics can barely tell the difference.
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🔮 Knowing the hundreds you spent could have gone to upgrading your ticket.
2026-10-22 · assertive framing · Made It Here Awards 2026: Best Luggage
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🔮 Several others agree they enjoy the sensation, and considering how easy it is to use — and the fact that no working out is required — it could be a great low-effort hack for those looking to level up their self-care routines (and especially worth it while it’s on sale).
Also by Miska Salemann
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 49 articles by Miska Salemann →

Topics

Amazon Blueprint Longevity Mix FitBeast Grip Strengthener New York Post

Subjects

Amazon ORG · 2× Miska PERSON · 2× Bryan Johnson PERSON · 1× Bryan Johnson’s PERSON · 1× FitBeast ORG · 1× Jennifer Aniston’s PERSON · 1× Johnson PERSON · 1× Miska Salemann PERSON · 1× New York Post ORG · 1× The Post ORG · 1×

Narrative

“Grip strength predicts longevity better than being jacked,” Johnson wrote in an old post on X. “Muscle size matters, but strength matters more.” Of course, grip strength alone isn’t a crystal ball for how you’ll age, but research does suggest it’s a solid indicator of overall health.
framing: mixed · carried by 1 article(s) · first seen 2026-09-18
🔮 At least, that’s the thinking among biohackers like Bryan Johnson, who has claimed that grip strength may be a better indicator of overall health and aging than muscle size alone.

Claims (17 extracted, 4 hedged)

At least, that’s the thinking among biohackers like Bryan Johnson, who has claimed that grip strength may be a better indicator of overall health and aging than muscle size alone. uncertain
strength → ’ → size
“Grip strength predicts longevity better than being jacked,” Johnson wrote in an old post on X. “Muscle size matters, but strength matters more.” Of course, grip strength alone isn’t a crystal ball for how you’ll age, but research does suggest it’s a solid indicator of overall health. asserted
it → predict → health
One systematic review linked grip strength to several outcomes, including bone density, nutrition, hospitalization, and mortality. asserted
review → link → density
And while grip strength may be one of the less-talked-about aspects of fitness, it’s also relatively easy to train with the right tools. uncertain
it → talk → tools
One popular grip-strengthening kit on Amazon is currently marked down 62% to just $10 ahead of October Prime Day, which kicks off Oct. 6 and 7 — though many more deals are already live. asserted
deals → strengthen → Day
Reviewers say the kit is quite simple to use, and many claim they’ve noticed a significant difference in their grip strength after using it consistently. uncertain
they → say → it
FitBeast’s best-selling Grip Strengthener features a textured, contoured handle designed to provide a comfortable, secure grip. asserted
Strengthener → sell → grip
Users can pick between multiple resistance levels to adjust the difficulty as they build strength. asserted
they → pick → strength
“This is a fantastic way to strengthen your grip,” one reviewer shared. asserted
reviewer → strengthen → grip
“I use this about two times a week on my non-lifting days, and after a week of use, I could feel the difference. uncertain
I → use → difference
My hands wouldn’t give out or be in pain when doing deadlifts or any pull exercises.” asserted
hands → give → deadlifts
Besides the handle, the kit also includes a stress-relief grip ball, finger exerciser and other accessories designed to support flexibility and mobility — targeting different muscle groups within the hand and wrist. asserted
kit → include → hand
The entire set is available in four colors, and thanks to its compact design, it’s easy to bring anywhere. asserted
it → ’ → design
This article was written by Miska Salemann, New York Post Commerce Writer/Reporter. asserted
article → write → Salemann
As a health-forward member of Gen Z, Miska seeks out experts to weigh in on the benefits, safety and designs of both trending and tried-and-true fitness equipment, workout clothing, dietary supplements and more. asserted
Miska → seek → trending
Taking matters into her own hands, Miska intrepidly tests wellness products, ranging from Bryan Johnson’s Blueprint Longevity Mix to the viral Oura Ring to Jennifer Aniston’s favorite workout platform – often with her adorable toddler by her side. asserted
Miska → take → side
Before joining The Post, Miska covered lifestyle and consumer topics for the U.S. Sun and The Cannon Beach Gazette. asserted
Miska → join → Sun
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