Launch · Healthcare & Life Sciences

Deepinder Goyal's Temple to sell brain health wearables

By Startup Enthusiast · 17 January 2026

What they do

Temple, founded by Deepinder Goyal, plans to sell wearable devices that monitor brain health

The venture follows Continue Research's 'Gravity Ageing' hypothesis, which links gravity to ageing via reduced cerebral blood flow

The hypothesis has drawn scepticism from doctors and fitness founders, but Goyal says Temple may proceed regardless

Deepinder Goyal, founder of Eternal, has a new venture called Temple that will sell wearable devices to monitor brain health.
Temple is not officially launched yet, but images of Goyal wearing the device emerged last week.
Continue Research, Goyal's research arm, unveiled its first hypothesis called 'Gravity Ageing'.
The hypothesis claims that gravity's downward pull on blood flow to the brain can reduce cerebral blood flow by up to 17% when standing or sitting upright.
It suggests that reduced circulation over decades may weaken the hypothalamus and brainstem, triggering ageing.
The hypothesis sparked intense online debate and scepticism, prompting Goyal to apologise and share a more detailed explanation.
Temple would sell wearable devices to measure cerebral blood flow, a direct result of the hypothesis.
Goyal hinted Temple may operate as a standalone consumer product even if the hypothesis doesn't hold.

The hypothesis has drawn criticism from medical professionals and fitness founders.
FITTR founder Jitendra Chouskey called the research a parody, saying it was used to set a narrative to sell Temple's product.
Dr Arvinder Singh Soin said Goyal is trying to defy medical science and physics in one swipe.
Renowned liver doctor Cyriac Abby Phillips called the hypothesis wrong.
The longevity movement is gaining momentum among Indian founders, partly due to Bryan Johnson's India visit in December 2024.

Temple will sell wearable devices to measure cerebral blood flow.
The devices are intended to track a biomarker related to brain health.
Prototypes are currently shared only with research institutions.
The product may be sold as a standalone consumer device even if the hypothesis is not proven.
The Indian wearables market is nascent, with global giants like Apple, Samsung, OnePlus, and Google dominating.

Product: A brain-monitoring wearable device designed to track health metrics.
Customers: Individual consumers interested in health and brain-monitoring technology.
How it makes money: Direct sale of wearable hardware devices to consumers.
What sets it apart: Claims to be the smallest wearable device on the market.
Operations: Manufacturing is outsourced to partners like Zetwerk and Ethereal Machines.