If there’s one thing we’ve learned about Deepinder Goyal over the years, it’s that he doesn’t really do “normal.” Whether it was Zomato’s quirky marketing, his unpredictable social updates, or his sudden jump into longevity science, he has always been someone who likes tinkering with unusual ideas. And this week, he got people talking again — not with a business announcement, but with a small gadget stuck to the side of his head.
Yes, you read that right.
Goyal recently stepped onto a Feeding India stage wearing a tiny metallic device near his temple, and for a good few hours, the internet basically lost its mind. Memes came in fast; some people joked that he’d installed a secret chip, others said he looked like a Marvel character who misplaced his costume. It did look a bit sci-fi.
But the curiosity wasn’t unjustified. Turns out, this little sensor has a purpose — a surprisingly ambitious one.
What Exactly Is This Temple Device?
After the initial chaos online, Goyal offered some clarity: the gadget is an early prototype of a brain-flow monitoring device. It’s something he and his team have been quietly working on for over a year. The idea is fairly simple on the surface — the device tracks real-time blood flow to the brain — but the science behind why he’s doing this is anything but simple.
Goyal believes in something he calls the Gravity Ageing Hypothesis. In basic terms, he suggests that because humans spend most of their day upright, gravity subtly drags blood flow downward, reducing the smooth flow to certain brain regions. Over decades, that reduced perfusion might contribute to ageing. It’s bold, a bit unconventional, and honestly sounds like the kind of thing you’d hear at a late-night research discussion.
Still, instead of just theorising, he decided actually to test it — hence the wearable.
The Experiments and the Early Results
According to Goyal, the “Temple” device has been helping him gather real-time data on how blood flow fluctuates during normal day-to-day activity. Alongside this, his team has been experimenting with inversion therapy — basically hanging upside down or keeping your head lower than your heart for a few minutes daily.
He claims that early internal tests showed a 7% improvement in average brain flow after six weeks of consistent inversion practice. That’s a big number if true, especially considering he suggests that such a boost might make up for up to 10 years of age-related decline.
Now, whether this turns out to be groundbreaking science or just an interesting experiment… well, that’s something only time and actual peer-reviewed research can tell. Even Goyal admits they’re very early in the journey.
He’s Not Trying to Build the Next Apple — At Least Not Yet
What’s refreshing is how grounded Goyal seems about the entire project. He openly says that Temple might never become a major commercial venture, describing it as a “small, cute company” — almost like a side hobby with scientific ambition.
He also pushed back at those who accused him of inventing a scientific theory just to sell a gadget. His response was blunt: Creating a pseudoscientific gimmick just for hype “is not his game.” And to be fair, if there’s anything Goyal values, it’s public trust. You can feel that in the way he defends the integrity of the research.
Interestingly, he’s already put real money behind his curiosity. His initiative, Continue Research, set up a $25 million fund to explore ageing, long-term biology, and similar topics. So even if Temple doesn’t go commercial anytime soon, the research certainly isn’t stopping.
But Not Everyone’s Convinced
As expected, doctors and medical researchers have stepped in with strong opinions. Some were polite, some were… less so.
A well-known hepatologist, Dr. Abby Philips (Liver Doc), called the theory “reductionist and mono-causal,” basically saying ageing is far more complicated than just gravity messing with your blood flow.
Other experts warned that inversion therapy can be dangerous for people with glaucoma, hypertension, vertigo, or cardiovascular issues. In short, it’s not something you want to casually try without guidance.
Their scepticism doesn’t mean Goyal is wrong — it just means he’s exploring something that sits well outside what’s commonly accepted. And honestly, that’s how many breakthroughs start.
So What Does This Mean for Wearables?
If Temple eventually becomes a real product, it could carve out a completely new category. Today’s wearables track steps, oxygen levels, heart rate, and sleep. But brain-flow tracking? That’s new territory. And in a world obsessed with longevity, sharper cognition, and biohacking, the demand might be bigger than we think.
Right now, though, Temple feels more like a research tool than a consumer gadget — something built for data collection rather than mass adoption.
And maybe that’s a good thing. Good science takes time, and Goyal, at least publicly, doesn’t seem to be in a rush.
My Honest Point of View
Personally, I find the whole concept oddly fascinating. Yes, parts of it sound like they came straight out of a wellness podcast, but you can’t fault the guy for being curious. If anything, we need more founders who’re willing to step into unexplored territory instead of sticking to “safe” ideas.
Will Temple become big? Hard to say. It might stay niche. It might evolve into a major health-tech brand. It might simply help people understand brain health just a little bit better.
But what’s undeniable is this: Deepinder Goyal is experimenting with something the world hasn’t looked at seriously before — and that alone makes the journey worth watching.
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