Through my understanding of sleep physiology and the latest scientific research, I have dramatically improved my sleep. I use ...

Overtiredness is a paradoxical condition where you're exhausted during the day but struggle to sleep at night. Even if you're ...

It’s no secret that a good night’s sleep plays a vital role in mental and physical health and well-being. The way you feel ...

A recent study links morning coffee consumption to lower death rates from cardiovascular problems. A Fort Worth cardiologist ...

Adults, like babies, can become overtired. Experts explain why it makes sleeping hard and how to break the cycle. Counting ...

The brain, however, can become more excitable over the course of an extended period of wakefulness, causing your thoughts to ...

This is likely due to caffeine blocking the receptors of a chemical found in human cells called adenosine. It may also be due ...

It may come as no surprise that hormonal upheaval – say, during puberty or menopause – can play havoc with sleep. But our hormones influence sleep all the time, not just during big changes.

Dr Rajan also agreed with the “caffeine tolerance” theory, stating that when you get used to drinking coffee or other caffeine-containing drinks, your body responds by simply making more adenosine ...