Question 1

How accurate is the One-Rep Max calculator?

Accepted Answer

The calculator uses the Epley formula, which is accurate within 5-10% for rep ranges of 1-10. Accuracy decreases above 10 reps. Always use a spotter when testing actual maxes.

Question 2

How does the body fat calculator work?

Accepted Answer

It uses the US Navy method, which estimates body fat from circumference measurements (neck, waist, and hip for women). It's accurate within 3-4% for most people.

Question 3

How much protein do I actually need?

Accepted Answer

It depends on your goal. For general health, 0.36g per pound of body weight is the minimum. For muscle building, 0.73-1.0g per pound is recommended. Our calculator provides ranges based on your specific goal.

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