Some research has found a link between dehydration and the body's capacity to recover from transient ischemic episodes (TIAs or mini-strokes). In this study, participants were either given water to drink or told to avoid drinking during exercise. Those who drank less than 1.5 L of water per day experienced more TIA symptoms after exercise. However their blood glucose levels were better maintained throughout the night, which suggests that drinking enough water may help people control their diabetes by reducing post-exercise hypoglycemia (low blood sugar) episodes. Taken together, these findings show that insufficient fluid intake can lead to increased risk of having a TIA episode. It also suggests that people with diabetes should be encouraged to drink enough water during exercise to keep hydrated and reduce their risk of having a TIA.