Body Systems
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Astronauts can experience bone loss in space. To understand why, you need to know a bit about how bones are formed and maintained in your body.
Humidity is an important part of life on Earth and life in space. This backgrounder explains what humidity is, how it is measured and how it affects us both mentally and physically.
Get active in this activity and explore the impact of exercise on your heart rate. Ready, set, GO!
What is a reflex? Test your reaction time and find out why reflexes are important in this challenge activity.
Learn how to measure lung capacity and about the factors that can affect our lung capacity in this hands on activity.