Protein
Protein supplies amino acids used to build and repair body tissues and support many internal functions.
Why protein matters
Protein supports muscle, organs, skin, enzymes, immune function and many other structures and processes.
Adequate protein is especially useful during fat loss, training, ageing and recovery.
Quality and amount
Protein quality depends partly on its amino acid profile and digestibility. Animal foods, soy and some mixed plant sources can provide a strong amino acid profile.
Practical sources
| Source | Comment |
|---|---|
| Eggs | Complete, dense protein source. |
| Meat and fish | Complete protein with high protein density. |
| Dairy | Includes casein and whey proteins. |
| Legumes | Useful plant protein, often combined with grains. |
| Nuts and seeds | Contribute protein, but also bring substantial fat. |