| Many
people exercise for weight control. But regular exercise can do
much more: It preserves and builds muscle and bone tissue, increases
flexibility, improves the body's response to insulin, and helps
control blood pressure. Physical activity may lower blood cholesterol
levels and increase levels of desirable HDL. The higher your HDL,
the better. More to the point, studies show that active people live
longer.
Increasingly,
experts are recommending a combination of aerobic activity, such
as brisk walking and bicycling, and strength training, commonly
known as weight lifting. You don't need to jog daily or climb
mountains to reap the benefits of physical activity, however.
New research suggests that even moderate movement, including gardening,
dancing, strolling, and household chores, promotes good health
when done regularly, for 30 minutes per day, four to five times
a week.
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