August 17, 2009
1. Tighten your abs. Just before you start your run, contract your abs (while staying upright), then hold that position while running. As with other intensity techniques, it may be tough to stay like this for long, so begin with interval-style training--tighten your abs for a minute, then relax them. Work up in time until you naturally hold your abs tight as you run. Continue to work on intensity by increasing the muscle tension even more for intervals.
2. Perform abs sets. You can also perform abdominal "crunches" as you run, or even during a cool-down power walk. As you bring your stride arm forward and slightly across your body, crunch that side of your abs. Repeat with the other side. Continue working alternate sides of your abs as you run. Also, concentrate on stretching your abs as you pull your arm back.
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