Summary
Your tummy gets empty, and the body begins to change how it works.
Your brain, heart, and muscles all adjust to the new situation.
Scientists studied this to learn how the body stays healthy.
Key Points
4 points1
The body uses stored fat for energy.
2
Blood sugar levels go down.
3
The brain still works but uses a different fuel.
4
Long periods without food can affect many organs.
New Words to Learn
5 wordsprolonged
lasting a long time
systematic
organized and happening in a regular way
organ
a part inside the body like the heart or brain
controlled study
a test where scientists keep things the same except one thing
significant
important or big change
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