Drinking Water Temperature for Exercise

Cold water is generally better during exercise because it helps you drink more and cools your core temperature faster. Warm or room‑temperature water can be useful before or after exercise for comfort and digestion, but it doesn’t improve performance the way cool water does.

What cold water does for exercise

• Improves voluntary drinking: Athletes consistently drink more when water is around 15–16°C (cool, not ice‑cold). This leads to better hydration overall.

• Helps lower core temperature: Cold water is more effective at cooling you during high‑intensity or hot‑weather training.

• Feels more refreshing: That “cooling hit” can reduce perceived exertion, helping you push longer.

  
  

What warm/room‑temperature water does

• Better for digestion: Warm water supports smoother digestion and blood flow, which can matter before training or after eating.

• Faster gastric emptying: Room‑temperature water (~20°C) empties from the stomach slightly faster, which can feel more comfortable for some people.

• Useful post‑workout: Temperature has only a small effect on rehydration compared to volume, sodium, and drinking rate. So warm vs cold doesn’t change recovery much.

Situation	Best water temperature	Why
During exercise	Cool (15–16°C)	You drink more + better core cooling
Hot conditions	Cold	Helps prevent overheating
Before exercise	Room‑temperature	Easier on digestion
After exercise	Whatever feels best	Temperature has minimal impact on rehydration compared to volume & electrolytes