Why does your body make a lot of urine one day and very little the next?

The amount of urine your body produces can vary due to several factors, including fluid intake, dietary choices, physical activity, and hormonal changes. On days when you consume more fluids or foods with high water content, your body may produce more urine to eliminate the excess. Conversely, on days with lower fluid intake or higher levels of dehydration, urine output can decrease. Additionally, factors like stress or changes in temperature can also impact urine production.