Health & Fitness Blog
Science-backed guides to help you understand your health numbers.
What Is a Normal Blood Pressure by Age?
The healthy target is the same at 30 as at 70 — but average readings rise with age. See normal blood pressure ranges by age and what the numbers mean.
June 22, 2026How Much Protein Do You Actually Need Per Day?
The RDA for protein is a minimum, not an optimal target. Learn how much protein you actually need based on your weight, goals, and activity level.
June 1, 2026What Is a Good Running Pace for My Age?
Average running pace varies widely by age, sex, and experience. See the benchmarks for 5K, 10K, and half marathon — and learn how to improve yours.
June 1, 2026How to Calculate Your Calorie Deficit for Weight Loss
A calorie deficit is the foundation of fat loss — but the size of the deficit matters. Learn how to calculate yours and what rate of loss to target.
June 1, 2026What Does Body Fat Percentage Actually Mean?
Body fat percentage is a far more accurate health marker than BMI. Learn what the numbers mean, healthy ranges by sex, and how to measure yours.
June 1, 2026How to Calculate Your Macros for Weight Loss
A complete guide to finding your ideal protein, carb, and fat targets — and why getting the ratio right matters more than cutting calories alone.
May 13, 2026What Is a Good VO2 Max for My Age?
VO2 max is one of the strongest predictors of long-term health. See the benchmarks by age and sex, and learn how to improve yours.
May 13, 202616:8 vs 18:6 Intermittent Fasting: Which Protocol Is Better?
Both 16:8 and 18:6 work — but they suit different lifestyles and goals. Here's an honest comparison to help you choose.
May 13, 2026What Does an A1C of 6.5 Mean?
An A1C of 6.5% is the clinical threshold for a Type 2 diabetes diagnosis. Here's what it means and what you can do about it.
May 13, 2026How Accurate Is the BMI Calculator?
BMI is used everywhere — but how accurate is it really? We break down what it measures, where it fails, and better alternatives.
May 13, 2026