Drinking boiled cumin water is beneficial for health. Cumin (jeera) contains a natural power to coolen body heat. But my recommendation would be that you can try out Indian salty cumin lemonade or what we call jaljeera which is readily available in the market. It is an ayurvedic refreshing drink that cools your body during summer. By having such drinks you not only step forward to make your health a wealth but also avoid fizzy, carbonated drinks available in the market. Cumin also detoxifies the system making it more efficient. You can always reverse your taste and preference and try out other cumin drinks.