• 🍹 Universal Solvent: Water's the "Uber" for our cells! It carries nutrients to cells, takes away their trash, and even delivers cell-made goodies like hormones. Imagine a city's transport system: the buses (water) help citizens (nutrients) get around!

• 🌬 Personal AC: Ever felt hot and sweaty? Water helps distribute heat around your body. When you sweat, the water evaporates, cooling you down. It's like your body's natural air conditioner.

• 🛷 Slip 'n Slide: It's difficult to squash water, which makes it a fabulous lubricant. Just like oil in a car, it helps things slide smoothly. Think about joints, tendons, and muscles; they need water to move without friction.

• 🧪 Biochemical Party Venue: Water's the venue where our cells' metabolic reactions happen. Think of it as the club where all the cool cellular reactions hang out!

Water % in Humans: Between 50-70%.

• Why the variation? It depends on our body fat.
• Think of fat storage cells (adipocytes) as raincoats. They don't hold water. So, someone with more body fat will have a lower % of body water.
• The opposite is true for fat-free tissues. They're like soaked sponges, holding 60-80% water. So, the more lean muscle you have, the more water-drenched you are!