The guide provides comprehensive information about body water and its importance to maintain a healthy lifestyle. The article explains that 45-65% of the body weight is water and is divided into two categories, extracellular water (ECW) and intracellular water (ICW). A balance between these two types of body water is crucial for optimal health, and a 3:2 ratio of ICW:ECW is considered healthy. The article also highlights how increased ICW and ECW affect the body and health, such as increased muscle mass and inflammation, respectively.

Furthermore, it explains how to determine fluid levels through dilution and bioelectrical impedance analysis (BIA) methods. It also emphasizes the importance of maintaining a healthy diet, staying hydrated, and exercising regularly to maintain a healthy balance of body water. Reducing sodium intake can also help reduce excess ECW.

Overall, the guide emphasizes that maintaining a balanced ratio of ICW:ECW is essential for optimal health and that a healthy lifestyle can help achieve it.