With all the nutrition information being thrown at us these days, it's easy to agree on one thing: We should all be eating lots of plants. And with Earth Day approaching and concerns about the health of our planet on the rise, shifting toward a "reducetarian" lifestyle—one that incorporates fewer meaty meals—makes a lot of sense right about now.

Eating more plants can improve our health and protect the livelihood of our land and animals, yes, but a lot of people are concerned that it doesn't do enough in the protein department. Of course, protein is essential to our health, and it does a lot more than just help us build muscle. But how much protein do we really need?

According to the American Dietetic Association, the average adult needs only 0.8g of protein per kg of body weight. Let's break that down. Under these rules, a 130-lb person would want to aim for roughly 47g of protein a day—less than you might think. Here are some delicious plant-based sources that will help you reach your daily requirement and keep you feeling nourished and satiated.