Long, lean stalks of celery look just like bones—and they’re good for them, too. Celery is a great source of silicon, which is part of the molecular structure that gives bones their strength. Bones are 23 percent sodium, and so is celery. Celery also has blood pressure reducing properties. It contains active phthalides, which relax the muscles of the arteries that regulate blood pressure so the vessels dilate, causing blood pressure to drop. Since it’s low in calories and high in fiber, it’s good to include celery in your diet. I cook with the outer stalks and keep the small, tender, centers in a baggie in the fridge for snacking.