…because the shape of the water bottle isn’t uniform either. Part of my new year’s resolution is to drink 4 liters of water per day, so I spend a lot of time looking at those lines. Edit: 4 liters is a lot, but appropriate for my size and activity level. Without conscious consideration I don’t drink enough water. It looks blue because the bottle is blue.
Don’t even mention HCL or KOH man. I did earlier on another post and it was removed for spam! Of all things. Suffer from hemorrhoids? Go get your prep H. Leave me out of it.