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Living in Microgravity
Exercising in Space
Astronauts do daily exercise, too. On
n.
the level or amount that is typical of a group of people or thing
average, astronauts exercise 2 hours per
average
day.
Exercise keeps bones and muscles
▲ One of the space exercise strong. Since astronauts don’t use them
machines is Orbital
Treadmill. Astronauts walk
or jog on a treadmill. They in microgravity, bones get lighter and
need a harness to hold
them on the treadmill so weaker and muscles shrink.
they don’t float off.
Unit 12 | Living in Microgravity
