The Small Habit That Undoes Some of the Damage of Sitting

This 2026 review pooled results from laboratory trials to test what happens when prolonged sitting is broken up with brief activity, compared with sitting through a meal without moving. Short breaks of standing or walking lowered the rise in blood sugar and insulin that normally follows eating, and breaking up sitting roughly every 15 to 20 minutes produced the largest improvement, with brisk walking working better than simply standing. Because these were short laboratory trials measuring the hours after a single meal, they show a real and immediate physiological effect rather than a long-term outcome such as reduced disease risk, though the direction fits the wider evidence on sedentary time. It offers something genuinely actionable: not a call to exercise more, but a small, repeatable habit. For a woman whose day is spent mostly at a desk or in meetings, it suggests that standing up for a minute or two every so often is a modest, low-effort way to soften the metabolic cost of a sedentary day.