If you’re on a mission to improve your muscle tone or overall health, you may have heard a little something about amino acids. But what exactly are they? And, is it necessary to take amino acid supplements to get their benefits? To find out, we asked nutritionist Jo Woodhurst , director of nutrition at British supplement brand Ancient+Brave . Read on for everything we learned. And, spoiler alert: Amino acids might just be exactly what the doctor ordered—as long as you keep a few key factors in mind.

What are amino acids?

Amino acids are absolutely essential to our health—and for life itself. They are the so-called “building blocks” of proteins. They play a key role in the growth, repair, and maintenance of almost every body tissue and system, including energy production, muscle gro

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