That statement is true
Aerobic exercise such as swimming and running will burn a lot of calories from our body
And in order to burn calories, our body need supply of oxygen.
That's why our heart tend to beat really fast when we do Aerobic exercise, it's because our heart need to pump a lot of blood to deliver oxygen to the muscles
B.help them make the change they are already thinking about rather than waiting for them to change
C. support the change they have made to keep them from relapse into old habits