Stress and Sleep

When I attended medical school back in the 1970’s, I was taught that stress accounted for 75% to 90% of illness or disease. Stress was and continues to be, so pervasive that it is now normal. This may sound strange, but in fact, as a noun, normal is defined as, the...

Why is Delta Sleep so Important?

Delta sleep (also known as slow wave sleep or deep sleep) is recognized by EEG activity with high voltage (75 µV) waves with a frequency range typically between .5 Hz and 3.5 Hz. Longer periods of Delta sleep occur in the first part of the night, primarily in the...