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Health Information Fatigue: Is it Cause for Concern?

The further we get from the boundless energy of childhood, the quicker we seem to run out of steam.

But getting older doesn't automatically sideline you from being active, says Robert Bowser, MD, a family medicine physician at Rush. Usually, our energy declines because of normal changes. Both genes and environment lead to alterations in cells that cause aging muscles to lose mass and strength and to become less flexible. As a result, strenuous activities become more tiring.

These cellular changes also limit the heart muscle's pumping ability, reducing the flow of oxygen-rich blood that provides energy to the cells.

"Though no one stays as energetic as they were in childhood, we can delay the decline in energy and stay active as we age," Bowser says. He suggests the following to help bolster your energy level.

Improve your heart health. Aerobic exercise raises your heart rate. Over time, that strengthens your heart muscle so it can pump more blood, delivering more oxygen and nutrients to muscles for energy, which can counteract the natural decline of the heart's capabilities. Brisk walking is a good start. Work up to bicycling, swimming or another aerobic activity.            

Slow muscle loss and stimulate muscle growth. Strong muscles react faster and have more  endurance. Because aging muscles lose mass and strength, it's important to maintain or even build muscle strength as you grow older with  regular strength training exercises, such as weightlifting. If you're just starting, try lifting a can of soup. Move on to heavier weights or a weight machine.

Maintain muscle elasticity. As your muscles naturally become less flexible with age, stretching exercises are crucial to help you maintain the flexibility your body needs to stay active. Be sure to warm up for a  few minutes before stretching —  try jogging in place and pumping your arms. Then slowly move into your stretch as far as you can  without pain. Hold it for 10 to 30 seconds. Repeat your stretch and try to stretch further. Our article on stretching for joint health offers some ideas for specific stretches.

Rest up. You can also get an energy boost from something as simple as sleep. Adults need seven to eight hours of sleep each night for the body to release enough of the hormones that help build and repair muscles. And research suggests lack of sleep decreases the body's production of glycogen, a carbohydrate that is stored for energy use during physical activity.

If these steps don't help, see "Fatigue: Is it cause for concern?" to learn when you should see your doctor for fatigue.

For most people, however, plenty  of exercise and a good night's sleep make a good recipe for energy — at any age.

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