Summarize this article in one sentence.
Protein helps your body build and repair muscle cells and connective tissue. You also need protein to help transport nutrients throughout your body. Not getting enough protein can lead to your muscles breaking down over time, resulting in lower strength and energy.  Elite endurance athletes should be consuming 1.3 to 1.6 grams of protein per kilogram of body weight each day. Resistance athletes should be consuming between 1.0 and 1.7 grams of protein per kilogram of body weight each day. Remember that pounds are approximately double the weight in kilograms. For example, a 150-pound (68-kilogram) endurance athlete should be eating about 92 to 108 grams of protein each day. Some foods contain more protein than others. How much protein-rich food you eat will depend on your dietary needs and the foods you choose to eat.  To get 10 grams of protein from animal foods, you would need to eat either two eggs, 1.5 slices of cheese, one cup (250 milliliters) of milk, 40 grams of lean chicken, 50 grams of fish, or 200 grams of yogurt. To get 10 grams of protein from plant sources, you would need to eat either four slices of wholemeal bread, three cups of whole grain cereal, two cups of pasta, three cups of rice, 120 grams of tofu, 100 grams of soy "meat," or 3/4 cup lentils. In addition to getting enough protein, you should ensure that you're consuming protein at the optimal times. You need protein throughout the day, but you should also boost your protein intake after training or competing.  Ingesting large amounts of protein immediately after exercising helps your body take up and retain more amino acids. This, in turn, will help your body recover from exercise and repair muscle as needed. Make sure you continue to eat enough protein throughout the rest of the day. The increased uptake and retention of amino acids from protein consumed right after exercise will continue for up to 24 hours. This means that your protein source for breakfast will be used as rapidly as the protein you ate after a workout last night.

Summary:
Check how much protein you're getting. Choose protein-rich foods. Use protein to recover after workouts.