Think about it, for the first one, blood is primarily made up of water. dehydration is the lack of water. lower volume of water in the body=lower blood volume.
second one, low blood pressure
third one, not sure... sorry
Cardiovascular or cardio-respiratory endurance or aerobic fitness, is the ability of the heart and lungs to deliver oxygen to the body's tissues during sustained physical activity. Muscular endurance is the ability of a muscle, or group of muscles, to perform continuously without fatigue. Weight training can be performed with free weights, such as barbells and dumbbells, or by using weight machines to increase the muscular strength.
Mitochondria contains special enzymes that muscle cells need to utilize oxygen.
I would give him a short shot and make him run up because chances are if he likes baseline, he might not be as good as volleying.
