Examples of homeostasis include the regulation of body temperature, the pH of extracellular fluid, or the concentrations of sodium, potassium and calcium ions as well as that of glucose in the blood plasma, despite changes in the environment, diet, or level of activity.
Blue-collar workers perform labor jobs and typically work with their hands. The skills necessary for blue-collar work vary by occupation. Some blue-collar occupations require highly skilled personnel who are formally trained and certified.
A collaring ceremony is a special time in the life of a Master/Mistress as well as the slave/sub; a collar is a sign of devotion, obedience and acceptance. There are several different types of collars within the BDSM community, each one with a unique set of requirements, expectations, and rituals.