Researchers at the University of Sydney found in a 2025 study, based on data from 103,000 individuals wearing activity trackers for several years, that only 1.5 to 4 minutes of daily intense activity bursts (such as taking the stairs instead of the elevator or carrying heavy shopping bags) dramatically reduced the risk of major adverse cardiovascular events (MACE). The effect was much greater for women than for men.
3.4 minutes of intense training per day reduced the risk of MACE by 45 % in women and 16 % in men.
Women without regular training who still recorded 3.4 minutes of high-intensity activity per day had 51 % lower risk of heart attack and 67 % reduced risk of heart failure.
Of course this is not entirely new information, but it’s always valuable to have more studies that strengthen the argument.
