When Deepinder Goyal, the CEO of Zomato, appeared on Raj Shamani’s podcast, viewers couldn’t help but notice a small device worn on his temple. As curiosity grew, social media exploded with humorous guesses about what the device might be. Some even joked that it was an “external SSD” or a “pimple patch.” However, the truth behind the device is far more intriguing. So, here is everything you need to know about Deepinder Goyal’s podcast with Raj Shamani.
What is the ‘Temple’ Device?
During Deepinder Goyal’s podcast with Raj Shamani, he was wearing a device called Temple. This experimental tool is designed to monitor real-time blood flow to the brain, providing valuable insights into neurological health. The small, gold- or silver-colored sensor tracks blood circulation, which plays a crucial role in brain health and ageing.
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This device is part of Goyal’s personal research on the Gravity Ageing Hypothesis. He has committed $25 million (around Rs 225 crore) of his personal funds to further the study, which is being privately developed under his parent company, Eternal. The device is not yet available for public use.
Deepinder Goyal’s Podcast: Gravity Ageing Hypothesis
In 2025, Goyal shared his theory that gravity may be shortening human lifespans. He believes that gravity’s constant pull on the human body, especially the brain, could be reducing blood flow to this vital organ. In Deepinder Goyal’s podcast, he claims the device could accelerate brain ageing, leading to a faster overall decline in health.
The research behind this theory is backed by science, and Goyal has spent two years testing it with doctors and scientists worldwide. His hypothesis is grounded in the observation that, because humans spend most of their lives upright, gravity pulls blood downward, which may impair circulation to the brain over time.
Research Insights: Bats, Yoga, and Human Height
Some of Goyal’s findings tie into interesting facts about the natural world. For example, bats are among the longest-living mammals relative to their size. The research suggests that their inverted position, with their heads below their hearts, may explain their longevity. Similarly, many yoga poses involve having the head below the heart, and some practitioners claim that this inversion contributes to longer life. Additionally, shorter people tend to live longer than taller individuals, possibly due to the reduced effort the heart needs to exert in pumping blood to the brain.
While this research is still in its early stages, it has already sparked a lot of conversation and curiosity. Goyal’s unique approach to understanding longevity and ageing continues to fascinate many.
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