Articles

Newton’s laws and force explained clearly: inertia, F=ma, and action-reaction, with worked examples in newtons for students and curious minds.

Learn how to calculate velocity and acceleration with simple formulas, a clear step by step worked example, and the correct units for every result you get.

BMI health risk explained in plain terms: what BMI measures, the general BMI categories, and why doctors treat BMI as one screening reference, not a diagnosis.

Blood pressure categories explained in plain terms: what systolic and diastolic mean, general reference ranges, and why one reading is not the full story.

The cholesterol ratio divides total cholesterol by HDL cholesterol. See the formula, a worked example, and general reference points doctors often discuss.

eGFR estimates how well your kidneys filter waste from your blood. Learn what an eGFR kidney function test measures and what general reference ranges mean.

A1C measures how much sugar has attached to your hemoglobin over about three months. See the general A1C categories and how they compare to a glucose test.

Running cadence is your steps per minute. See how to measure it, what the 180 steps per minute idea means, and why cadence is a general guide, not a rule.

Learn how to calculate swimming pace per 100 yards or meters, work through a real example step by step, and use your pace to plan smarter swim intervals.

Cycling power zones explained: what FTP means, how the 7 zones break down as a percent of FTP, and how riders use each zone to train with a clear purpose.