Carbs provide quick energy, fats help cell health, and protein builds and repairs body tissues in a balanced macro diet.

A healthy macro split gives you plenty of carbs for energy, enough protein for muscles, and the rest from fats to aid hormones and fullness.

Protein digestion turns long chains into amino acids using stomach acid, enzymes, and intestinal cells so your body can absorb and use them.

Proteins are broken down when digestive enzymes cut peptide bonds step by step, releasing single amino acids that the small intestine can absorb.

Your body burns dietary protein for fuel by stripping nitrogen and feeding carbon skeletons into glucose and ATP production when carbs run low.

Protein digestion in the stomach starts with acid and pepsin turning compact food proteins into smaller chains for later absorption.

Protein digestion in your stomach turns big protein chains into shorter pieces so later enzymes can finish the job and release amino acids.

During digestion, long protein chains are cut into amino acids that cells use for energy, tissue building, enzymes, and many other daily tasks.

The main measurable breakdown product of skeletal muscle is creatinine, released at a steady rate and cleared by the kidneys.

The main waste product from protein breakdown in humans is urea, formed in the liver from ammonia and removed by the kidneys in urine.