India, April 11 -- While high-intensity interval training often dominates health and fitness headlines, a US physician suggests the most potent 'brain hack' for women in midlife might actually be found in a quiet, 40-minute stroll. Also read | Mumbai neurologist shares best 'brain hack' to manage anxiety and calm your nervous system

In a March 5, 2026 episode on Heal with Kelly, Dr Amy Shah - a nutritionist and physician trained at Harvard, Columbia, and Cornell - revealed that low-impact movement is a critical tool for neurological health.

"Walking every day for 40 minutes, actually just three times a week, you will grow an area of your brain called the hippocampus," Dr Shah explained. "Grow the brain, even as an adult, just by walking...