What is protein?

Protein is a macronutrient that is essential to building muscle mass. It is commonly found in animal products, though is also present in other sources, such as nuts and legumes.

Energy Value of Protein: How Many Calories Are in It?

Protein, The Nutrition Source

5 things to know about protein - The Washington Post

Protein 101: A Complete Guide for Beginners to Calculate Your Optimal Daily Requirements

50 High Protein Foods to Help You Hit Your Macros

What is whey protein?

What are proteins and what do they do?: MedlinePlus Genetics

What is Protein - Why our body needs protein?

Plant-Based Protein Infographic

Protein - What is it? & Why it's Important - Absolute Body Solutions

What is protein? Herbalife Nutrition

Protein: What It Is, Types, Uses, Needs, Deficiency

Biology protein structure

Why is protein synthesis important? - Quora