This chapter has provided an overview of various aspects of well-being including fluid balance, electrolytes, vitamins, minerals, and complementary and alternative therapies. The body relies on precise fluid balance to maintain healthy physiologic functions. Disruptions to this balance can lead to health complications and even death. Electrolytes, such as sodium, calcium, and potassium, play a crucial role in maintaining fluid balance. In addition, they have a major effect on neurotransmission and muscular contraction. Changes in nerve and muscle excitability can be life-threatening. Vitamins and minerals are essential nutrients that the body requires in small amounts. Their deficiencies or excesses can result in a range of health issues. Additionally, complementary and alternative therapies, such as acupuncture and herbal remedies, are becoming increasingly popular as a means of promoting health and well-being. Understanding these various components of wellness is important for health promotion and disease prevention.