Grapefruit-Shrimp Ceviche

Low-cal, protein-packed, and full of vitamins and minerals like selenium (crucial for immunity) and B12 (for energy), shrimp are nutritional superstars. For this ceviche, they get marinated in a sweet-tart-spicy mixture; the acid in the grapefruit juice “cooks” them as they soak up the robust flavor.