NEET BIOLOGY

GENETICS AND EVOLUTION

INHERITANCE AND VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Exercise is important for cardiovascular health because it
A
increases blood pressure
B
strengthens heart muscle
C
slows the heartbeat
D
reduces sodium in the blood
Explanation: 

Detailed explanation-1: -Being physically active is a major step toward good heart health. It’s one of your most effective tools for strengthening the heart muscle, keeping your weight under control and warding off the artery damage from high cholesterol, high blood sugar and high blood pressure that can lead to heart attack or stroke.

Detailed explanation-2: -Physical exercise can also improve cardiovascular function through adaptations to the heart and vascular system (17, 24–27). Regular physical exercise decreases resting heart rate, blood pressure, and atherogenic markers, and increases physiological cardiac hypertrophy (13–15, 28).

Detailed explanation-3: -During moderate-to high-intensity exercise, your muscles and tissues demand more nutrients and oxygen, which means that your heart must work harder and pump faster to meet those needs, says Dr. Cho. Over time, your heart works more efficiently and can push out a greater volume of blood with every beat.

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