India, Jan. 5 -- Zomato CEO Deepinder Goyal was seen wearing his 'Temple' device in a recent podcast appearance, reigniting the conversation around his brain flow experiment. However, a doctor from AIIMS Delhi has dismissed the device as a "fancy toy" for billionaires who can afford to waste money.

In November 2025, Deepinder Goyal, founder and CEO of Zomato, shared what he called the "Gravity Aging Hypothesis." In this idea, he suggested that gravity might slowly reduce blood flow to the brain over a lifetime, and that reduced brain blood flow could contribute to ageing. (Also read: Deepinder Goyal links ageing to gravity, internet says 'hanging upside down' might be the fix)

Around the same time as his hypothesis post, photos circulat...