Feeling tired more often than not affects men for different reasons than women, and the causes range from hormonal changes ...

Shortness of breath when walking short distances can occur suddenly or be a chronic condition. It should be evaluated, as it can be due to a heart or lung problem.

Both dysfunctional breathing and hyperventilation can cause symptoms similar to chronic fatigue, such as dizziness, ...

More than a month after a Muni N-Judah train lost control and jolted riders during a morning commute, the San Francisco ...

Vitamin B12 deficiency develops gradually and affects both the blood and nervous system. It causes anemia, fatigue, numbness, ...

Just 2- to 3-minute “microbreaks” each hour can noticeably improve cognitive performance and concentration during long night ...

Operator fatigue causes Muni train to speed, leading to passenger injuries and subsequent SFMTA investigation.

Fatigued skin usually appears dull, dry and rough. Other signs may include dark under-eye circles, pores that appear larger, ...

Lethargy in cats is something I have encountered frequently in my 14 years as a veterinary surgeon. It is a very common reason for owners to bring their cats into the clinic, often describing them as ...