Vigorous workouts of as little as 30 seconds each can go a long
way to reducing health risks from diabetes. The weekly amount of
exercise should total seven minutes. Exercising 2 days each
week, 4 times each day, 30 seconds per session, a group of out-
of-shape but otherwise healthy individuals showed a 23 percent
improvement in how effectively their bodies used insulin to
clear blood sugar from the blood stream. The tests were
conducted by James Timmons, an exercise biologist at Heriot-Watt
University in Edinburgh. While health is improved and other
benefits are gained from more exercise, just seven minutes could
make a difference for a great many people who are at risk for
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