Watermelon rind and seeds
The delicious, red insides make for a refreshing snack or juice, but you’re able to get some powerful nutrients in the rind and seeds, as well, says Popeck. Instead of tossing, cut that white part under the green exterior and use it in your cooking. It contains the amino acid citrulline, which is converted into arginine, which helps to improve circulation, increase blood flow, improve heart health, boost immunity, boost libido, and reduce muscle fatigue.