Protein: How Much Do You Really Need?

Walk into almost any grocery store or health food store today and you will see protein everywhere. Protein bars line the shelves, protein powders fill entire sections, Greek yogurt has become a staple, and food companies proudly advertise the number of grams of protein on the front of their packages. With all of this attention, it's easy to assume that everyone needs to eat as much protein as possible. But is more always better? How much protein do you actually need? Does it matter when you eat it? And if you're getting enough protein from food, do you really need a protein supplement?