Certified Dietary Manager (CDM) Practice Exam 2025 – All-in-One Guide to Exam Success!

Hydration plays a pivotal role in overall health because it helps regulate body temperature and maintains cellular functions. Water is essential for several bodily processes, including the transport of nutrients and oxygen to cells, the removal of waste products, and the regulation of body temperature through mechanisms such as sweating and respiration. The body’s cells rely heavily on water to carry out biochemical reactions and maintain their structure. Furthermore, proper hydration ensures that organs function efficiently, supports cardiovascular health, and aids in digestion.

The other options do not accurately reflect the critical nature of hydration for maintaining health. For instance, while hydration can influence body weight, the primary importance lies in its functional roles rather than weight alone. Additionally, hydration does not directly affect sleep patterns or muscle growth; instead, it supports overall bodily functions that can indirectly impact these areas.