Exercise scientist Keith Diaz said that prolonged sitting harms both the brain and the body during a presentation at the TED2026 conference on April 15, 2026.
This shift in physical activity is critical because modern lifestyles have eliminated regular movement. This lack of activity leads to significant health risks, whereas brief movement restores glucose uptake, circulation, and brain function [1, 5].
Diaz said that short, frequent movement breaks can improve focus and reduce stress. He suggested a five-minute walk [1] to help improve a person's mood. Other recommendations for maintaining wellness include a three-minute mobility reset performed every 30 minutes [4].
Different research suggests varying durations for optimal health. A study involving 11,500 participants found that one hour of walking breaks is the sweet spot for benefits [5]. Additionally, some data indicates that spending 15 minutes [2] or 10 minutes [7] in silence daily can affect brain function and reduce stress.
Movement also plays a role in metabolic health. Sitting after meals can lead to a blood-sugar spike of 30 percent or more [3]. Regular movement helps regulate these levels, and supports overall systemic health [1, 4].
Diaz said that the goal is to break the cycle of continuous sitting. By incorporating small resets into the workday, individuals can mitigate the physiological damage associated with a sedentary office environment [1].
“Prolonged sitting harms both the brain and the body.”
The emphasis on 'micro-breaks' reflects a growing scientific shift toward treating sedentary behavior as a distinct health risk regardless of whether an individual exercises elsewhere. By targeting blood sugar spikes and cognitive decline through frequent, short bursts of activity, these interventions aim to integrate health maintenance into the standard professional workday.
