Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to decide on whether to get a rowing machine for home exercise [title] Select equipment that will provide physical exercise. [step] A rowing machine should not produce boredom and the type of machine chosen should have minimal risk of injury and be easy to use. [title] Understand the extent of a workout that is gained by using a rowing machine : [substeps] Aerobic benefits: the rowing machine stimulates the heart and lungs.

Ending1: Cardiovascular benefits: the rowing machine stimulates blood flow to the heart. It provides a greater means of oxygen, so it is almost a necessity for doing a cardiovascular workout. Ending2: The machine does not keep you confined inside a machine for prolonged periods of time. Cardiovascular benefits: cardiovascular benefits are apparent more closely in a water workout than from a traditional rowing machine. Ending3: Low blood pressure: the heart pump releases blood glucose and regulates the heartbeat. Cardiovascular benefits: the rowing machine connects the heart to the lungs by pumping it with adrenaline. Ending4: The stimulation is reached through the specific intensity and continued level of the exercise being taken. The levels needed for this aerobic workout is contingent upon the age and health of the person who is exercising.

Answer format: ending1/ending2/ending3/ending4