Fitness

Applying abroad with an Indian CGPA? Here is how the US 4.0 GPA scale works and how to convert your Indian marks so admissions officers understand them.

LCM and HCF are two of the most tested concepts in school maths. Learn the prime factorization method, the fast division shortcut, and where these numbers actually show up in real life.

A blood pressure reading of "120/80" means nothing until you know the categories. Here is the full AHA chart, how ranges shift with age, and when a number becomes an emergency.

Fasting, post-meal, random, and HbA1c blood sugar tests each measure something different. Here is the complete normal-vs-prediabetic-vs-diabetic chart for all four.

Calories tell you how much to eat; macros tell you what to eat it as. Learn how to split any calorie target into protein, carb, and fat grams for fat loss.

A BMI of 25 is "overweight" for a Western adult, but research shows South Asians carry significantly more body fat at the same BMI — and face higher metabolic risk. The WHO recognises lower BMI thresholds for Asians. Here is what the research says and why it matters.

Sleep science is clear: most adults need 7–9 hours. But the exact amount depends on your age — and more important than hours is timing your wake-up to the end of a 90-minute sleep cycle. Here is what the research says and how to use a sleep calculator.

Your maximum heart rate determines your five training zones — from fat-burning to peak performance. The old 220-minus-age formula is outdated. Here is the more accurate Tanaka formula, a zone table for every age, and how to use each zone.

"Drink 8 glasses a day" is everywhere — but it has no scientific basis. Your actual water needs depend on your body weight, activity level, climate, and diet. Here is the formula and a table that tells you your exact target.

Body fat percentage is a more accurate measure of health than BMI. But how is it calculated, what is a healthy range for men and women, and which measurement method is most accessible? This guide covers everything.

The BMI scale classifies weight from underweight to obese — but what counts as healthy varies by age and sex. This guide explains the WHO chart, what your number actually means, and the well-documented limitations of BMI as a health measure.

Most people confuse BMR and TDEE — and eating at your BMR instead of your TDEE is the #1 calorie calculation mistake. This guide explains the difference and tells you exactly which number to use for your goal.