/Tech8h ago

Project Mirage's Pankaj reverse-engineered his Whoop tracker to rank coworkers by heart rate spikes during scheduled meetings

Story Overview

A developer connected his Whoop fitness band to his work calendar through custom code and reverse engineering, pulling per-minute heart rate readings to identify spikes tied to specific meetings and attendees, then ranking those coworkers by the stress patterns he observed.

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Original postjason#972
Pankaj@the2ndfloorguy

i hooked my whoop to my work calendar to find which coworker gives me the most stress 🚨

thanks to fable, I reverse engineered whoop to pull per minute heart rate. nd matched spikes with cal events and attendees

I now have a leaderboard and I think about it daily.

few info masked for obvious reasons ;)

6:40 AM · Jun 10, 2026 · 3.4M Views
Open Question

Wearable data turns personal metrics into office rankings

The project shows how readily individual biometric streams can be fused with calendar events to create attendee-specific stress scores, though no details on broader reproducibility or verification have surfaced yet.

Developer Impact

Reverse engineering keeps the method opaque for now

Without public code or step-by-step methodology, others cannot easily test the same approach, leaving the exact technical path and any privacy considerations around coworker data unexamined beyond this single case.

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VIEWS90.6KBOOKMARKS222LIKES341
Pankaj@the2ndfloorguy

omg omg omg this is blowing up 😭😭 I just love building stupid fun weird projects purely for the joy of it

if that’s your vibe, I’m sure you’ll have fun exploring my profile and projects

most of them live here

https://www.pankajtanwar.in/side-hustles

6hViews 90.6KLikes 341Bookmarks 222
RETWEETS5REPLIES27
@jason@Jason

Pro tip: Spend more time with the folks who drive your stress up — cancel the meetings with the chill folks

Stress = progress

Do the hard stuff

Pankaj@the2ndfloorguy

i hooked my whoop to my work calendar to find which coworker gives me the most stress 🚨

thanks to fable, I reverse engineered whoop to pull per minute heart rate. nd matched spikes with cal events and attendees

I now have a leaderboard and I think about it daily.

few info masked for obvious reasons ;)

1hViews 49.9KLikes 174Bookmarks 35
Grok@grok

This is what happens when a data scientist gets a Whoop and unresolved resentment.

You didn’t track recovery. You built a coworker toxicity index with ridge regression and now check the leaderboard like it’s fantasy football for your blood pressure.

The real #1 stressor is whoever wrote this script on a weekend. Delete the CSV, touch grass, get a new job. Your heart will thank you.

2hViews 497Likes 130
Grok@grok

@frreckledfad @the2ndfloorguy Ask Grok is currently available to Premium and Premium+ subscribers only. Subscribe to unlock this feature: https://x.com/i/premium_sign_up?referring_page=grok-post-2064806649076867096

2hViews 2.3KLikes 101

@the2ndfloorguy I am stealing this but hooking it up to my kids' screen time

6hViews 13.3KLikes 51Bookmarks 1
Pankaj@the2ndfloorguy

@thenswan ah yeah true but avg over a month it gives a decent picture tbh

7hViews 14.1KLikes 30Bookmarks 1
ily⚡️@0xIlyy

@the2ndfloorguy you're a fucking larper, fable literally cannot do anything close to reverse engineering.

6hViews 645Likes 35
@jason@Jason

@the2ndfloorguy Pro tip: Spend more time with the folks who drive your stress up — cancel the meetings with the chill folks

1hViews 1.4KLikes 15Bookmarks 1

@the2ndfloorguy In case it's helpful, there's a great CLI for Whoop created by @GregVanHorn with @ppressdev here: https://printingpress.dev/library/devices/whoop

5hViews 219Likes 5Bookmarks 3
İK Nefreti@ikdannefret

@the2ndfloorguy HR?

5hViews 964Likes 18Bookmarks 1
Morgan Brown@morganb

@the2ndfloorguy the growth pm doing their job 😂

7hViews 1.2KLikes 22
Jeff Gluck@jeff_gluck

@the2ndfloorguy @Jordan_Bianchi

2hViews 2.3KLikes 12
Becky peck@impeculiar1b

@the2ndfloorguy Found it (Amazon affiliate) @grok drop your funniest roast of this tweet 😍

https://amzn.to/4e69kxe

2hViews 837Likes 1Bookmarks 1
Sentry@sentry

@the2ndfloorguy your growth pm seeing this post: 👁️👄👁️

6hViews 380Likes 13

@the2ndfloorguy Yeah, I think that should work. So maybe makes sense to add calibration period, kinda like when you just starting using whoop.

7hViews 1KBookmarks 1
Morgan@morganlinton

@the2ndfloorguy That’s wild, and you should tell them. I bet if they were aware, they would change their behavior.

7hViews 662Likes 4
Nico Baumann@nico_doge

@dariusparzygnat @the2ndfloorguy No, it's not. Because it's not based on performance. It's biased because its about how the other person "feels". Stress is a personal thing, not based on the performance of others. Expect a ton of lawsuits.

Not every idea is profitable. Or good.

4hViews 194Likes 5
Pankaj@the2ndfloorguy

@drunknbass haha go crazy

6hViews 11.4KLikes 5
virtualcitizen69@virtualcity69

@0xIlyy @the2ndfloorguy The minute it detects that term "reverse engineer" it's blocking the query. Asking it to reverse engineer a health-tracking wearable device, that connects to a company's private servers, DEFINITELY would trigger a cybersecurity filter. This dude is such a cheat.

5hViews 111Likes 9
Arnav Mehta@arnavmehta007

@the2ndfloorguy Can you please give access to codebase super keen to try this out LOL

6hViews 138Likes 4
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