Brief High-Intensity Bursts May Boost Health More Than Longer Workouts
A UK Biobank analysis found that spending at least 4% of weekly time in vigorous, breathless activity lowered risks of eight chronic diseases (including dementia and type 2 diabetes) and reduced overall mortality over seven years; intensity mattered more than total activity, and even roughly 15–20 minutes per week of such effort added to daily life (stairs, brisk walking, active play) was linked to meaningful health benefits.
