If you spend your day planted in a chair, you could increase your risk of deep vein thrombosis (DVT) -- a condition that causes swelling, pain and potentially fatal blood vessel damage.

More often seen in passengers on long-distance plane flights, DVT can occur in office workers who sit for at least 3 hours without getting up. To fend it off, take a walk every hour or so (set a reminder in your electronic calendar if you need a nudge).

From the August issue of Prevention magazine. For more tips, see www.prevention.com.