How Much Water?
How much water do I need?
The goal of drinking fluids before exercise is to be well hydrated before you are physically active. If you have rested for at least 8-12 hours before activity and eat and drink regularly, extra hydration may not be needed. If you have lost fluids from sweating prior to exercise, have not been regularly drinking, or have dark, concentrated urine, then you may need 1-2 cups four hours before you begin exercising and another ½ – 1 cup two hours before.