Health & fitness

Blood pressure ranges, BMI, heart-rate zones, hat and glove sizes.

• Blood pressure ranges (AHA chart) AHA blood pressure categories with systolic and diastolic ranges — normal, elevated, stage 1 and 2 hypertension and hypertensive crisis, explained.
• BMI chart: healthy weight by height BMI healthy-weight ranges for every height from 150 to 195 cm, with the full BMI category table (18.5–24.9 is healthy) and what BMI misses.
• Glove size conversion chart Convert glove sizes by hand circumference and length across US letter sizes, EU numbers and UK sizes — measure palm circumference and finger length to fit cycling, work and winter gloves.
• Hat size conversion chart Convert head circumference to US hat sizes, letter sizes (S–XXL) and international fits — measure around your head above the ears and order caps and helmets right.
• Heart rate training zones The five heart-rate training zones as percentages of max heart rate — with the 220-minus-age formula, resting-rate benchmarks and which zone to train in for fat burn vs VO2max.