Zomato founder & Eternal CEO Deepinder Goyal addressed widespread social media speculation after viewers spotted a small metallic device on his temple during a recent appearance on Raj Shamani’s podcast. He clarified that the gadget, called Temple, is an experimental, non-invasive wearable developed under his personal research initiative to continuously monitor real-time cerebral blood flow a key biomarker tied to neurological health, cognition, ageing, and his controversial “Gravity Ageing Hypothesis.”
Glimpse:
The device, worn near the temple, tracks brain blood flow precisely and continuously during daily activities. It is not a Zomato/Eternal consumer product, remains in the experimental phase, and is part of Goyal’s privately funded research (via Continue Research, with ~$25 million committed personally). Goyal has been testing it himself for over a year. The speculation exploded after his podcast appearance, with memes ranging from “external SSD” to “brainwashing patch,” prompting him to explain its scientific purpose linked to gravity’s potential long-term effect on brain circulation.
Deepinder Goyal, founder and CEO of Eternal (parent company of Zomato), recently found himself at the center of internet curiosity when a small, sleek metallic device attached to his right temple became clearly visible during his appearance on Raj Shamani’s popular YouTube podcast “Figuring Out” (aired early January 2026). Social media quickly lit up with speculation, memes, and theories from joking that it was an “external SSD,” “charging pad,” or even a “mind jewel” prompting Goyal to clarify what the device actually is.
The gadget is called Temple. It is a lightweight, wearable sensor (appearing gold or silver in photos) designed to measure cerebral blood flow accurately, continuously, and in real time during everyday activities unlike traditional clinical tools that provide only short, controlled measurements.
Key points from Goyal’s explanation:
Purpose Temple tracks blood circulation to the brain, which Goyal considers a crucial, under-monitored biomarker for neurological wellbeing, cognitive performance, mental fatigue, and ageing processes.
Link to personal research The device is directly tied to Goyal’s “Gravity Ageing Hypothesis” an unconventional theory he has publicly explored since November 2025. He proposes that constant upright posture (standing/sitting most of our lives) allows gravity to gradually reduce blood flow to the brain, potentially accelerating ageing by affecting sensitive regions like the hypothalamus and brainstem which regulate breathing, heart rate, hormones, immunity, and temperature.
Development status Temple is experimental and still in research phase. It is not a Zomato or Eternal commercial product. Goyal is developing it under his separate personal research initiative Continue Research, into which he has invested approximately $25 million of his own funds.
Current use Goyal himself has been wearing and testing the device for over a year to gather real-world data supporting his hypothesis.
Goyal stressed multiple times that this is not a marketing gimmick and that he is sharing the research openly as part of a broader scientific quest into human longevity not attempting to sell anything.
Social media reaction ranged from fascination (“next-level biohacking”) to skepticism and humor (“Zomato now delivering brain updates?”). Some medical experts have also questioned the Gravity Ageing Hypothesis, noting that while cerebral blood flow is an important area of study, linking it directly to gravity as a primary driver of ageing remains highly speculative and lacks large-scale clinical validation at this stage.
Temple is currently a research tool only, with no public availability, pricing, or commercial launch date announced.
“It’s an experimental device to calculate Brain Flow accurately, real-time, and continuously. I’m not sharing this as the CEO of Eternal, but as a fellow human, curious enough to follow a strange thread.”
By
HB Team
