When you drink beetroot juice in a cool room, your body produces more nitrite in your blood than when you drink it in a warm room.

When you're in a cool room, your saliva has more nitrite after drinking beetroot juice than when you're in a warm room.

Taking nitrate supplements makes more nitrite in your blood, and the more you take, the more nitrite you get.

Whether you drink beetroot juice or not, your skin temperature goes down about the same amount when you're in a cool room.