Lettuce
Like celery, lettuce is another weight loss friendly food that can be used in a variety of ways. To regrow your own lettuce, save a few leaves from a head of lettuce, put a little bit of water in a bowl with the leaves, and place it in direct sunlight. Be sure to mist the leaves a few times throughout the day. After a few days, roots should appear at the base of the leaves, at which point you can put them in pots or in your garden to continue growing.
