Yes, you can and should drink water when fasting. Drinking water during fasting is allowed and encouraged because it helps keep the body hydrated, supports bodily functions, reduces hunger, and does not break the fast since it contains no calories. This is true for intermittent fasting, fasting before medical procedures, and many other fasting types, although some religious fasts may have specific restrictions on fluid intake. Overall, water is essential for maintaining health during fasting periods and can even help make fasting easier by reducing hunger pains.