13 comparison tools

Human body

Heartbeats, breaths, steps, blood, hair and the other numbers hiding inside you.

• A lifetime of eating Lifetime totals for food, water, coffee and everything else that goes in.
• Age milestones An age against the physical milestones the body reaches on the way through.
• Blood pumped The volume your heart pumps in a minute, a day and a lifetime, against tanks and pools.
• BMI scale A body mass index on the scale of the WHO categories, with their limits made explicit.
• Body proportions Body measurements against the classical proportions artists have used for centuries.
• Body temperature A body temperature against the thresholds for hypothermia, fever and heatstroke.
• Breaths in a lifetime A number of breaths, and the volume of air that passes through you.
• Cells and surfaces Cell counts and internal surface areas that turn out to be far larger than the body containing them.
• Daily steps A daily step count against sedentary, active and athlete-level activity.
• Hair and nails Growth rates for hair and nails, and what they add up to over a lifetime.
• Heartbeats in a lifetime A number of heartbeats against a minute, a day, a year and a whole life.
• Radiation dose A radiation dose against bananas, flights, scans and the thresholds where harm starts.
• Sleep debt Accumulated sleep debt against the effects that have been measured at each level.