"Life is not merely to be alive, but to be well."
--Marcus Valerius Martial

If you have been feeling fatigued or unusually tired for a week or more, maybe it's time to look at some reasons. A few simple tweaks in your lifestyle may bring about the increase in energy you need.

The following are some of the usual suspects:

Poor Diet

If you wish to have energy, you have the use the right "fuel" for your body, starting with breakfast. Though sugar, coffee, tea and chocolate may give you a temporary boost, they may worsen fatigue long term. Combine whole grains, fruits or vegetables with lean protein for staying power--for example, eat a slice of whole-wheat toast with low-fat cheese and a piece of fruit.

Lack of Exercise

Sedentary activities can produce muscle fatigue, but exercise improves oxygen flow and boosts energy. You can do many simple activities that can help: Stretch at your desk or take a break with an elastic band. A brisk 10-minute walk will also energize you for up to two hours when you are fighting of that mid-afternoon slump.

See the following for easy exercises: http://hubpages.com/hub/E-Z-Stretch-Exercises-to-Do-NowAt-Your-Computer

Stress and Anxiety

These draining emotions can be exhausting. Take action to relieve bothersome problems, learn some relaxation techniques (yoga and meditation are good choices) and enjoy quiet pursuits, such as reading or listening to soothing music each day.

Not Enough Beauty Sleep

Experts say most of us do best with seven to eight hours of sleep daily. Losing one or two hours of sleep regularly can decrease your alertness. Improve sleep by avoiding eating, drinking or exercising three to four hours before going to bed, keeping a regular bedtime and taking time to relax before lights out.

Avoid these sleep wreckers: an uncomfortable or too soft mattress, annoying noise or too much light, alcohol or nicotine too close to bedtime.

A physician may also be able to help you uncover the source of fatigue, if improving in these areas does not seem to help. Certain medications, diseases and conditions, such as chronic pain, for instance, can affect your energy levels, too.