Why if you have chicken legs you should eat chicken legs (and feet): The Glycine Gap

The Forgotten Amino Acid That Plant-Based Warriors Don't Want You to Know

While soy enthusiasts are busy perfecting their quinoa-tempeh combinations and tofu smoothies, convinced they've cracked the protein code, there's one amino acid that's laughing at their carefully calculated macros from the sidelines: glycine.

We often hear about lysine deficiency in grains and methionine deficiency in legumes, which is why nutritionists…