India, Jan. 19 -- Cortisol is a steroid hormone produced by the adrenal glands that is usually associated with stress. However, cortisol is not always a bad thing, and its level in the body fluctuates in a daily cycle, according to Andrew David Huberman, American neuroscientist, podcaster, and associate professor at Stanford University School of Medicine.

Appearing on the January 5 episode of Chris Williamson's Modern Wisdom podcast, Andrew explained how cortisol helps us to wake up on our own every morning, irrespective of whether we own an alarm clock.

Andrew stated that the real reason we wake up every morning is because of the Cortisol Awakening Response.

A couple of hours before sleep at night, the cortisol level is low in the bod...