Fitness Pumps Up Your Heart
Not only does exercise help fight disease, says Bryant, it creates a stronger heart -- the most important muscle in the body. That helps makes exercise -- and the activities of daily life -- feel easier.
"Your heart and cardiovascular system will function more effectively," says Bryant. "The heart will build up less plaque. It will become a more efficient pump."
And "when the heart becomes stronger, it pumps more blood per beat, so at rest, the heart rate is lower," says Astorino. "It's not going to have to beat as fast" to expend the same amount of effort.
Within only a couple days after you start exercising, Astorino says, "the body readily adapts to the stimulus it's getting and it becomes easier. You will feel less fatigue. It will not take as much effort when it comes to breathing. You shouldn't have as much pain or soreness."