1. Increased Cell Volume: Water is a solvent, and it moves freely across cell membranes to maintain balance. When you drink a lot of water, the concentration of water outside your cells increases. This causes water to move into the cells to equalize the concentration, leading to an increase in cell volume.

2. Cell Swelling: As water enters the cells, they swell up. This is a normal process within a certain range.

3. Potential for Hyponatremia: If you consume excessive water without adequate electrolytes (like sodium), the concentration of sodium in your blood can become diluted. This is called hyponatremia, and it can lead to a range of symptoms from mild nausea and headache to seizures, coma, and even death in severe cases.

4. Increased Urine Production: Your kidneys are responsible for filtering waste products and regulating water balance. When you drink a lot of water, your kidneys work harder to filter the excess water, resulting in increased urine production.

5. Dilution of Electrolytes: Excessive water intake can dilute electrolytes like sodium and potassium, which are essential for nerve function and muscle contraction. This can disrupt normal body function and contribute to electrolyte imbalances.

6. Potential for Cell Damage: While cells are designed to handle some degree of swelling, extreme water intake can cause excessive swelling, potentially damaging cell structures.

Important Note: It's crucial to maintain a balance. While staying hydrated is essential, excessive water intake can be dangerous. The amount of water your body needs varies based on individual factors like activity level, climate, and overall health. If you have concerns about your water intake or experience any unusual symptoms, consult a medical professional.