Running Basics

Treadmill or outside?
For the average person, running 6-9 mph on a health-club-quality treadmill, the difference between running on a treadmill and running outside is slight, perhaps nonexistent. Some studies show no difference at all between treadmill and outdoor running; other research shows outdoor running burns 3-5 percent more calories. What accounts for the small difference? The treadmill belt does some of the work by helping pull your feet back underneath your body. When you run on a treadmill, you also don't have to overcome wind resistance.
Put the weight on
Research shows that runners who don't lift weights lose muscle at the same rate as sedentary people do— about 30 percent from age 30 to 70. However, people who lift weights regularly can preserve most of their muscle mass throughout life. This means they maintain a higher metabolism and are less prone to weight gain.
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