India, March 23 -- In an era of biohacking and complex longevity supplements, Dr Sanjay Bhojraj, a California-based cardiologist with over two decades of experience, is stripping health back to its simplest form. His top recommendation for 'hacking' your health span (the period of life spent in good health)? A 15-minute daily walk outdoors. Also read | California cardiologist with 20 years experience reveals earliest sign of ageing: Not wrinkles, joint pain, weight gain

While cardiovascular health is often associated with high-intensity training, Dr Bhojraj argued that the mental and environmental 'reset' provided by a short walk is just as vital. In a March 20 Instagram post, he highlighted how stepping away from the recycled air of off...