Frequently Asked Questions
What is body fat percentage?
Body fat percentage is the proportion of fat mass to total body weight. It's a better health indicator than BMI alone. Essential fat is 2-5% for men and 10-13% for women.
How does the Navy method work?
The U.S. Navy method uses circumference measurements. For men: waist and neck. For women: waist, neck, and hip. Combined with height to estimate body fat percentage.
What is a healthy body fat percentage?
Men: 2-5% essential, 6-13% athletic, 14-17% fitness, 18-24% average, 25%+ obese. Women: 10-13% essential, 14-20% athletic, 21-24% fitness, 25-31% average, 32%+ obese.
How accurate is the Navy method?
About 3-4% accuracy compared to DEXA scans. More accurate for people within normal ranges, less accurate for very lean or very overweight individuals.
What is the Jackson-Pollock method?
Uses skinfold caliper measurements at 3 body sites. Men: chest, abdomen, thigh. Women: triceps, suprailiac, thigh. More accurate than circumference methods.
How do I measure my waist correctly?
Measure at navel level, standing straight with feet together. Use flexible tape, don't pull too tight, measure at end of normal exhale.
BMI vs body fat percentage?
BMI uses only height and weight and doesn't distinguish fat from muscle. Body fat percentage directly measures fat mass. Same BMI can mean very different body fat levels.
How can I reduce my body fat?
Combine calorie deficit with strength training and cardio. Aim for 0.5-1% body fat loss per month. Protein intake of 1.6-2.2g/kg helps preserve muscle.