Tag Archives: what is circadian rhythm

THE CIRCADIAN RHYTHM

Dave Allen has been all around the world with his military career.  He has taken assignments, particular in time of war, that carried him into and out of several time zones, often in a 24 to 48 hour period.  He once had a six month period where he never slept in the same time zone two nights in a row.  He was constantly on a C-130, going from place to place.  That is so far beyond “jet lag” that it is hard to comprehend for one who has never attempted it.

He said that after a month or so of that schedule and being exhausted from lack of sleep due to the time changes, his body began to adapt to this short-circuiting by sleeping whenever it was time to sleep where they were that night.  Basically, circumstances caused his “body clock” to be rewired!  It was in this context that Dave spoke of the “circadian rhythm.” The American Heritage Science Dictionary defines it as “A daily cycle of biological activity based on a 24-hour period and influenced by regular variations in the environment, such as the alternation of night and day. Circadian rhythms include sleeping and waking in animals, flower closing and opening in angiosperms, and tissue growth and differentiation in fungi.”  Normally, in one time zone, darkness is the cue for sleep and daylight is the cue for being awake.  But that can become skewed. Apparently, as Dave proved, the body can adapt even in the most extreme circumstances and give one the “body clock” needed for whatever circumstance.

What is your spiritual “circadian rhythm”?  God has equipped us with His Word, with a conscience, and external examples and influences that should supply us with a healthy view of right and wrong.  So long as we do not violate the conscience by ignoring and disobeying God’s Word or choosing improper influences, we keep the right perspective.  However, the conscience can become seared (1 Tim. 4:2)  We can get past feeling (Eph. 4:19).  We can turn our ears from the truth and be turned to fables (2 Tim. 4:3).  We can even believe what is false (2 Th. 2:11).  When this happens, we adapt our sense of right and wrong to what we come to believe or practice.  Isaiah’s peers did that, famously calling good “evil” and “evil” good.

A society’s value system can get turned upside down, and so can an individual’s.  This adaptation goes against God’s intended order, but the consequences of such an adaptation could not be more negative.  Let us be careful not to allow ourselves down a road where we “exchange the truth of God for a lie” (Rom. 1:25).  In the spiritual realm, this is not a matter of indifference.

–Neal Pollard