Protein holds every cell in your body together, ranging from powering muscles to strengthening hair. You can spot protein in everything from pancake mix to bottled water. Here, we break down how much is an optimal amount to eat (or drink) daily, the best sources that supply complete proteins, how it powers muscles through workouts and recovery, and its link to weight loss. Plus, there are quick and easy recipes for every meal, including our best burger recipes, plant-based dishes that keep you full and a guide to sourcing sustainable beef. Inside this new special edition, you'll also find our workweek strategy for prepping high-protein dinners and the dish on when to eat your protein to see the most benefit.