Which type of exercise, also known as cardio, forces you to breathe harder and speeds up your heart?

Question 4 options:

flexibility

anaerobic

endurance

aerobic

aerobic

What type of goal is one that you can achieve right away?

Question 5 options:

idle-time

unstructured

short-term

independent

short-term

What is rope-like tissue in your body that helps you move?

Question 6 options:

skin

nerve

bone

muscle

muscle

Max doesn't warm up before he goes for a run, and very soon he feels a burn in his chest. What is building up in Max's body?

Question 7 options:

oxygen

lactic acid

muscle

tissue

lactic acid