Protein is one of the three macronutrients your body needs to function. Whether you're trying to build muscle, lose weight, or just eat healthier, understanding protein is essential. In this guide, we'll cover everything a beginner needs to know.
What Is Protein?
Protein is made up of amino acids — the building blocks of your muscles, bones, skin, and nearly every other body part. There are 20 amino acids, and 9 of them are "essential," meaning your body can't make them on its own. You must get them from food.
How Much Protein Do You Need?
The recommended dietary allowance (RDA) for protein is 0.8 grams per kilogram of body weight (about 0.36g per pound) for the average sedentary adult. But if you're active, you likely need more:
- General fitness: 0.5-0.7g per pound of body weight
- Building muscle: 0.7-1.0g per pound of body weight
- Losing weight (preserving muscle): 0.8-1.2g per pound of body weight
Best Protein Sources
Animal Sources
- Chicken breast: 31g per 3.5 oz (cooked)
- Eggs: 6g per large egg
- Greek yogurt: 15-20g per cup
- Salmon: 25g per 3.5 oz
- Lean beef: 26g per 3.5 oz
Plant Sources
- Lentils: 18g per cup (cooked)
- Chickpeas: 15g per cup
- Tofu: 20g per cup
- Quinoa: 8g per cup (cooked)
- Nuts & seeds: 5-7g per ounce
Protein Timing — Does It Matter?
The "anabolic window" myth suggests you must eat protein within 30 minutes of exercise. In reality, total daily intake matters far more than timing. That said, spreading protein across 3-5 meals throughout the day is slightly more effective than eating it all at once.
Common Protein Myths
Myth: Too much protein damages your kidneys.
Fact: For healthy individuals, high protein intake (up to 2g per pound) has not been shown to cause kidney damage. People with existing kidney disease should consult a doctor.
Myth: You can only absorb 30g of protein at once.
Fact: Your body can absorb much more than 30g at a time — it just takes longer. The "30g limit" is a misinterpretation of research on muscle protein synthesis.
Track Your Protein Intake
Use our Macro Splitter to calculate your daily protein target, then track your meals with a food scale and journal.
Etekcity Food Kitchen ScaleWeigh your portions accurately for precise protein tracking.
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Nutrition Tracker JournalDaily food diary to track meals, protein, and macros for 90 days.
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