What Vitamin Are you lacking when you are tired?

[martinahandy]

You may have heard this improbable advice before: Getting more exercise can help you feel more energetic. "Many people think, 'If I'm feeling so fatigued, how am I going to bring myself to exercise?'" says Jessica Matthews, MS, an exercise scientist with the American Council on Exercise. Yet the research (on real people, not mice) shows this to be true. Part of the reason for this effect comes from what happens when you exercise: your heart pumps more oxygen and nutrients into your bloodstream, your lungs and cardiovascular system work better and you feel more energetic. What's more, the type of physical activity that works best for alleviating fatigue "is not that intense exercise that people feel they have to do," Matthews says. The notion that exercise has to be grueling in order to work keeps many exhausted women from lacing up their sneaks.

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