How can the training principles be applied to improve cardiovascular fitness?

Adisease in which scar tissue replaces healthy liver tissue

Trending data is needed when evaluating fitness levels in order to a. compare against others b. chart overall progress c. correct inaccurate data d. keep a person motivated

Minor illnesses: a.) decrease the risk of sids b.) increase the risk of sids c.) increase the risk of hospitalization d.) decrease the risk of allergies e.) increase the risk of allergies