Water stagnation

When we have water that doesn't move for a long time, it becomes "stagnant". Just like when we don't move our body for a long time, our muscles become tired and weak. Similarly, when water doesn't move for a long time, it becomes dirty and full of germs. This is because when water moves, it gets mixed up with fresh oxygen from the air, which makes it healthy and clean. But when water doesn't move, it just sits there and the oxygen doesn't get mixed in. This is why it's important to make sure that water is always moving and not sitting still, especially in places like old wells or ponds where the water doesn't get replaced frequently. When we drink stagnant water, we can get sick because of the germs in it, so it's always better to drink fresh and clean water that is moving and flowing.