Why is it important to do proper etiquette and safety in using facilities and equipment?

please help me with this...​

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells

Ay i hate cuz my peepee be small

Khurshid is recovering from a heart attack. which type of rehabilitative care would she benefit from the most?