On top of fridges, stacked in grocery aisles, and sprinkled all over your social feed—protein powder is everywhere. You might even have a half-used tub quietly judging you from the back of your pantry. But what is protein powder, really? Protein powder is a concentrated source of protein made from animal or plant ingredients—like whey, casein, soy, pea, egg, or blends. The best protein powders deliver a potent dose of high-quality protein, » Read more about: Guide to Protein Powder: Scoop the 411 From an RD »
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Check out our expert guide to the carnivore diet food list including the latest research, how it works and the benefits.

How many miles is a 10k? Get the answer from a long-distance runner, plus learn some tips on how to get race-ready.

Looking for the answer to “How often should you work out?” A CPT explains how much the average adult should exercise, and describes the benefits of working out.

Interested in teaching yoga? Learn everything you need to know on how to become a certified yoga instructor from an expert!

Release those tight hip flexors while binge-watching your favorite shows with the couch stretch! Check out our expert guide right here!

What is muscular endurance and how might it benefit you and your health? Check out our guide to find these answers and more!

A registered dietitian explains the different types of magnesium and their health benefits. Read on to learn which one might be right for you!

What is a GOLO Diet? Explore its potential for healthy weight loss without calorie counting, plus insights from a registered dietitian on its pros and cons.

Your body naturally produces enzymes, so do you need supplements for better digestion? An RD breaks it down in this clear and concise digestive enzymes guide.

Wondering how to use a chest press machine? A CPT explains how to do the exercise with good form, and gives modifications, variations, and alternatives to try.

Nothing sidelines you faster than soreness or stiffness in your knees. So, give those knees a little TLC by checking out our list of the best knee stretches!

You’ve heard a lot about it, but what is HIIT and how can it help you achieve your fitness goals? Check out our guide for these answers and more!