Plain-language explanations of the numbers behind the Fitly Pulse calculators, with sources.
A practical guide to daily water needs: official intake figures, what changes your needs, how our calculator estimates a target, and signs you are drinking too little or too much.
Understand BMR and TDEE, see the Mifflin-St Jeor equation with a worked example, and learn how to turn your estimate into a realistic daily calorie target.
Is 10,000 steps really the target? What research suggests about daily step counts, where the 10,000 figure came from, and how to build more movement into your day.
How many hours of sleep adults, teens and children need, signs you are not getting enough, and practical habits for better sleep.
How BMI is calculated, the WHO categories, why it can mislead for athletes and for some Asian populations, and what to measure alongside it.
Fitly Pulse