Our bodies evolved to make us stronger and less vulnerable during times of danger. As athletes, we pump this system daily. The downside? Our bodies are not so good at turning off this system.
Symptoms of Fatigue
There are more symptoms to fatigue than just feeling tired. Those symptoms include difficulty falling asleep, not feeling rested after a night's sleep, requiring a stimulant to get going in the morning, swelling around the eyes that subsides during the day, pain in the low back when pressure is applied, poor digestion, low libido, and many more. If it takes you awhile to get going each day, you may be suffering from fatigue, specifically from adrenal fatigue.
Via PAT NOVAK