You are presented with the question "How can you generate heat?" and the following answer choices: 
- With your hair
 - Electrical energy
 - Fully cooking the oysters
 - Raise your blood glucose
 - With your muscles
 - flow of electrons
 - Raise your oxygen level
 - Movement of an air mass

Now knowing that mammals can also generate little bursts of heat by shivering and heat is produced by muscle action and shivering, choose the best answer.


 

     With your muscles    