STEADFAST TRAINING GLOSSARY
Definition
Protein is a nutrient made from amino acids that the body uses to build and maintain tissues and produce many functional molecules, including enzymes.
What it means
Dietary protein can come from animal and plant foods. Total intake, the mix of sources and overall dietary adequacy matter. A protein powder is a convenient food supplement, not a requirement for strength training.
A practical example
At a meal, identify the main protein source before deciding whether a shake is needed. Examples include eggs, fish, poultry, dairy, tofu, beans or lentils, selected according to tolerance and preferences.
Putting it into practice
For adults over 40, connect protein planning to a consistent resistance training routine. Individual requirements vary with health, activity and other factors. Medical conditions that affect protein needs call for individualized guidance.
Related terms
Complete Protein · Essential Amino Acids · Macronutrients
Explore further
Strength training supplements after 40 · Browse the glossary