Minimal Weekly High-Intensity Workouts Can Boost Heart Health, Study Finds
A Norwegian study finds that just 30 minutes of high-intensity exercise per week—split into several short sessions, such as 7.5 minutes four times—can improve cardiovascular health, blood pressure, and blood sugar, with benefits often appearing 1–2 days after workouts. While more work is needed and this level of activity is not for everyone, researchers say any regular vigorous activity can offer meaningful health gains and may be more time-efficient than longer workouts; the key is starting, progressing gradually, and aiming for consistency.
