Your Body Clock

Sleep / Wake Cycle
The cycle of sleep and wake is one of the most obvious circadian rhythms in humans. Sleepiness is highest at night and lowest in the day. At night, we get the best quality sleep, and the longest blocks of sleep without waking up.

Am I at Risk for COPD?

If you are coughing all the day, have chronic shortness of breath, or other typical symptom, you may have Chronic Obstructive Pulmonary Disease (COPD). Sometimes, by the time you have noticeable symptoms, the disease is already at a moderate stage.