9. Your memory is fading
Not to forget, our brains need exercise just as much our bodies do. Hours spent sitting leads to reduced thickness in the medial temporal lobe, which might explain why you have been so forgetful.
A dose of aerobic fitness can not only boost this area, but also help with dementia.
10. You have trouble concentrating
The only cure for brain-fog might be as simple as exercising regularly. When you move more, your brain releases a chemical called BDNF (Brain derived neurotrophic factor) which may boost mental sharpness and concentration.