Cellular quiescence is a state in which cells temporarily halt their normal cycle of division and growth, becoming inactive and resting. This is a common phenomenon seen in various cell types, where cells enter a state of dormancy to conserve energy and protect themselves from stress or damage. During quiescence, cells can still perform essential functions such as repairing DNA and maintaining cellular homeostasis. Understanding the mechanisms and regulation of cellular quiescence is important for various fields of research, including cancer biology, aging, and regenerative medicine. Studies on cellular quiescence aim to uncover the signaling pathways and molecular mechanisms that control cell cycle arrest and re-entry, as well as the implications of quiescence on cell behavior and function.