We can learn a lot about stress from Astronauts

On earth gravity provides a physical stress on our bodies.

Our muscles and bones adapt to this stress to maintain their strength.

This is good.

In outer space bones and muscles no longer have the same physical stress.

Our cardiovascular system also no longer has to work as hard to pump blood.

This is bad.

Without the physical stress on earth, an astronauts physical health will deteriorate.

Unless there is the added stress of exercise.

This is why astronauts exercise for 2 hours a day.

While stress often has a negative association, it can be incredibly helpful and protective for our health in the right dosage and with appropriate recovery.