Fill four tall glasses with ice. Put 2 lemon slices and 1 lime slice in each glass.
In a small pitcher, gently stir together the juices and tonic water. Pour 1 cup into each glass. Serve immediately for peak flavor.
All materials courtesy of the American Heart Assoc. and ECES; the first two recipes are provided by Chef Gale Gand. Choose to be a BetterU and download recipes for a Better Brunch at www.go redforwomen.org