This Is Where Your Transformation Begins

We don’t just hand you tips, we hand you control.

Body Gang Education gives you straight-up, expert-backed guidance that cuts through the noise and tells you exactly what works—and why. From The Method to What the Fck Are Macros*, and our 30-Day Belly Fat Burn Blueprint—you’re not just learning theory. You’re getting a step-by-step strategy to shift habits, tighten discipline, and see change. It’s structured. It’s aggressive. And it’s built to get you out of your way.

Expect raw truth, clear direction, and no sugarcoating. You’ll also get a complete nutritional breakdown, macro targets, and meal strategies that match your fitness game plan. No starvation. No fluff. Just real results.

Product mockup

Office Supplies

Set goals,track progress

Real change isn’t random, it’s tracked. Journals to help you build discipline, stay focused, intentional, and accountable by measuring what matters. When you write it down, you own it.

Start Journaling

Drinkware

Boss Up

Fuel your ambition with premium drinkware made for those who show up, grind hard, and never make excuses.

Shop Now

body gang fitness

Gift Cards

Know anyone eager to progress? Give them this eBook + gear.

Buy Now

Body Mass Index

What is BMI

What is BMI?

BMI (Body Mass Index) measures body leanness or corpulence based on height and weight. It's a general indicator of whether a person has a healthy weight for their height.

BMI Classification for Adults
Classification BMI range (kg/m²)
Severe Thinness < 16
Moderate Thinness 16 - 17
Mild Thinness 17 - 18.5
Normal 18.5 - 25
Overweight 25 - 30
Obese Class I 30 - 35
Obese Class II 35 - 40
Obese Class III > 40
BMI for Children and Teens (Ages 2–20)
Category Percentile Range
Underweight < 5%
Healthy weight 5% - 85%
At risk of overweight 85% - 95%
Overweight > 95%
Risks of Being Overweight
  • High blood pressure, Type II diabetes, coronary heart disease
  • Osteoarthritis, sleep apnea, certain cancers
  • Lower quality of life, depression, increased risk of mortality
Risks of Being Underweight
  • Malnutrition, osteoporosis, lowered immune function
  • Growth/development issues, reproductive problems, surgery risks
  • Possible underlying medical conditions
Limitations of BMI

BMI does not account for muscle mass, fat distribution, age, or gender. It may misclassify muscular individuals or misestimate fat in seniors or children.

BMI Formulas
  • US Units: BMI = 703 × weight (lbs) / height² (in)
  • Metric Units: BMI = weight (kg) / height² (m)

Example: A person 5'10" and 160 lbs has a BMI of 23.0

BMI Prime

BMI Prime = BMI / 25

Used to assess how far someone is from the healthy upper limit. A value above 1 indicates overweight; below 0.74 indicates underweight.

Ponderal Index

Similar to BMI, but height is cubed. It’s more accurate for very tall or very short individuals.

  • US Units: PI = height (in) / ∛weight (lbs)
  • Metric Units: PI = weight (kg) / height³ (m)

Calculator

 

Body Gang BMI Calculator


ft in
lbs

 

Apparel & Gear

Product mockup

Free Downloads

Product mockup

The Method

Collapsible row

Collapsible row