How can my mood affect my sleep pattern

Your mood can also affect how well you sleep. Anxiety and stress increase agitation and keep your body aroused, awake and alert. You might find you can't turn your brain off, your heart beats faster and your breathing is quick and shallow. So getting enough sleep and the right kind of sleep is important.

Explanation:

answer(b) keep oxygenated and deoxygenated blood separate;

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.