Jupiterimages/Brand X Pictures/Getty Images. Panic is a natural reaction when you're served with a subpoena, but as far as legal documents are concerned, a subpoena duces tecum is one of the more innocuous ones you can encounter.
Circadian rhythms are biological oscillations that recur with a period of approximately one day. Health issues related to circadian rhythms include jet lag, shift work, seasonal depression, and time-of-day variations in response to medical treatments.
Biological Rhythms â A biological rhythm is any cyclic change in the level of a bodily chemical or function. â Biological rhythms can be: â Internal (endogenous) - controlled by the internal biological clock e.g. body temperature cycle â External (exogenous) - controlled by synchronizing internal cycles with external stimuli