Editors' Picks: Fall Activities [6]

Trick-or-Treat in reverse. This Halloween have kids dress in costumes and hand out candy to grownups. Global Exchange, a human rights ­advocacy group, is asking kids to distribute Fair Trade chocolate to raise awareness about abusive child labor, low prices for farmers and other problems in the cocoa industry. For more info or to try it in your neighborhood, visit globalexchange.org. Get more healthy Halloween ideas. [7]

Get (enough) exercise. Find out how much you really need in October, when the U.S. Dept. of Health & Human Services (the same group that wrote the Dietary Guidelines for Americans) unveils the first-ever Physical Activity Guidelines. Gym shorts, check. Walking shoes, check. Get moving! Check out EatingWell's diet and exercise tips. [8]

Find your inner farmer. Learn why Tim Stark traded his job as a New York City management consultant to take up heirloom tomato farming. In his recently released memoir, Heirloom: Notes from an Accidental Tomato Farmer (Broadway Books, 2008), Stark details the ­triumphs and tribulations of his quest for truly pure produce. Learn more about heirloom foods and how you can help revive America's food traditions. [9]

Go meatless on Mondays. Skipping meat and high-fat dairy products just one day each week could cut your saturated-fat intake by 15 percent, according to Meatless Monday, a national health campaign. Check out meatlessmonday.com for more information and meat substitutes. Start your week on a healthy note! Find recipes for meatless meals in our Healthy Vegetarian Recipe Collection. [10]

Live to 100. Did you know there are over 79,000 centenarians living in the United States, according to U.S. Census estimates? Celebrate Healthy ­Aging Month this September by eating your way young with foods like chocolate and blueberries. Find more anti-aging foods and other healthy-aging recipes. [11]

Editors' Picks: Fall Activities [6]