Such a thing seems too good to be true, but an emerging body of research suggests these micro-workouts a few 20-second rounds of stair-climbing, four-second sprints on an exercise bike, or two minutes of dashing to catch the bus can improve fitness, prevent disease and extend one's life.
After six weeks, their aerobic fitness, as measured by oxygen intake, had improved by five percent. This is about what you'd expect fr
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