Why is stretching considered exercise? choose all that apply
causes you to breathe harder
increases blood flow to the muscles
conditions the heart
heal the muscles
lengthens the myofibrils

When lifting heavy loads off the ground, the majority of the weight should be lifted by which of the following? a. arms b. legs c. back d. stomach

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm

1. controls how much sugar is in the blood pancreas 2. controls the other glands pituitary gland 3. manufactured by the brain to relieve pain thyroid 4. gland that regulates the body's energy levels endorphins