Secondly, get enough sleep. Adults need about seven to eight hours of sleep and research has shown that the older you get, the less sleep you require. Avoid caffeine, alcohol and exercise before your bedtime, the chemicals will make it difficult to fall asleep and stay asleep.

Lastly, get moving. Exercise has been found to be the best remedy for feeling tired. It creates energy. Most studies confirm this conclusion and doctors recommend 40 minutes of exercise four times a week.

Make these changes in your life, and stick with them for a couple of months. It is not expected that you fall into them whole-heartedly right away but give them time.  

"If you're still feeling the symptoms of fatigue after those changes, then you need professional help," says Sandra Adamson Fryhofer, MD, an internal medicine doctor in Atlanta via Prevention.com. Excess exhaustion could be the sign of a more serious medical condition that can be treated.

Medical Conditions that can Cause Fatigue

It is oftentimes difficult to figure out what is causing fatigue because the symptoms of diseases can be so varied. There is often an endocrine system imbalance, which worsens the symptom. Chronic inflammation caused by food allergies, or chemical sensitivities or a combination can also cause fatigue. Here are some of the diseases that play a role in chronic fatigue.

There are more than one million cases of Type 2 diabetes diagnosed each year. This long-term condition is marked by high levels of sugar in the blood. Because cells don’t efficiently use the blood sugar, it is left circulating in the body. As cells lack sugar for energy, fatigue sets because they don’t have the proper nutrients to sustain functions. Symptoms of diabetes include fatigue, weight loss, yeast infection, excess thirst, blurred vision, slow-healing cuts and wounds, hunger and frequent urination.

Chronic fatigue syndrome (CFS) is described as a crippling tiredness that continues for six months or more. Thus far, there is no known cause for this syndrome with symptoms of severe headaches, poor short-term memory and concentration skills – aka “brain fog”, bloating, joint pain, diarrhea, stomach problems similar to irritable bowel syndrome, constipation and nausea. Typically, CFS develops in one’s 20s to 40s.