5 results for “exercise”

1. The Human Body

   Muscles

   exercise makes you hot, and why your body shivers, contracting muscles rapidly to warm itself, when

   Article · 4 min read

   

2. The Human Body

   Lungs and Breathing

   exercise, with extra muscles joining in, it can move more than three litres and the breathing

   Article · 4 min read

   

3. Space & the Universe

   Space Exploration

   exercise for hours each day. China now operates its own station, Tiangong. Robot explorers Most of what

   Article · 3 min read

   

4. The Human Body

   The Heart and Blood

   exercise or fear and slow it during sleep, but they only adjust a rhythm that the heart

   Article · 4 min read

   

5. The Human Body

   The Skeleton and Bones

   exercise, calcium and vitamin D, which the skin makes from sunlight and which the gut needs

   Article · 5 min read