When you eat a lot of food usually after a holiday or something
It tell us the minimum heart rate for cardiovascular exercises
It shows us the heart rate that we need to achieve in order for our body to increase its metabolism above normal state, which resulted in increased calories burning.
Answer:
1. The ciliary muscle of the eye
2. The iris muscle of the eye
3. The piloerection muscle
Hope this helped!
Have a supercalifragilisticexpialidocious day!