Task 3 Complete the sentences with: involuntary, endorphins, hormones, cells and
epinephrine.
11 When we exercise our bodies release a chemical that helps concentration.
that we
12 Our memory and creativity depend on the number of brain
have.
13 The
in our body are feel good chemicals that make us feel relaxed
and happy.
14 The growth and strength of our muscles can be affected by our
15 Some muscles in our bodies are called
function automatically
muscles because they​

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