Not pictured: Fitbit and Withings scale. (via @Naveen)

Don't call it a startup--at least not yet--but Foursquare cofounder Naveen Selvadurai dropped some hints about an upcoming personal project at an event at Union Square Monday evening, as Erick Schonfeld revealed on Twitter.

The de-Crunched tech blogger was at the VC firm for an event about "Networked Health," and Mr. Selvadurai's proposition, taken straight from the Quantified Self rule book, sounded like it fit right in:

Former 4SQ founder @naveen talking about "personal analytics" and how observation c@ Union Square Ventures instagr.am/p/KoAA2XJHlN/

— Erick Schonfeld (@erickschonfeld) May 14, 2012

How @naveen hacks his body: No alcohol, no carbs, no sugar

— Erick Schonfeld (@erickschonfeld) May 14, 2012

What is @naveen's current project?"Google Analytics for everything I know about my body" have to track 3 things: exercise, food, sleep

— Erick Schonfeld (@erickschonfeld) May 14, 2012

As Owen Thomas points out on Business Insider, Mr. Selvadurai and his cofounder Dennis Crowley always tried to pitch Foursquare less as a check-in app and more as a "a data-driven recommendations engine which analyzes and rewards real-world behavior."

That worldview dovetails nicely into the "Quantified Self" movement, which presumes that by measuring and analyzing behavior, one can improve it. (You're less likely to splurge on french fries, say, if life is a game of improving your fitness and all the apps on your homescreen are keeping score.) The target market for QS is somewhere in the Venn diagram between Ray Kurzweil fans and people who keep an Excel doc of their bicep girth. With iPhone apps that can take your blood pressure or sporty spice bracelets that measure "your entire athletic life," you can take that treadmill monitor with you.

Mr. Thomas argues that Quantified Self movement is "a big deal in fitness-obsessed Silicon Valley," but wonders if "the idea may be fresher in New York City." Psssh. You think we don't know from optimization? We invite Mr. Thomas to check out the Betabeat archives where we've explored how #4HB techies have opted for QS as the life-hack du jour. It looks like our old friend Jay Parkinson, Tumblr MD, even made an appearance at the USV event.