Sometimes I leave my drink in the car just sitting in the cup holder and then it gets warm and gross but I drink it anyways cuz it'd be a shame to waste it. Recently I left my tropical flavored Fuze in the car and in direct sunlight. When I got back to the car, the Fuze was hot. Not just warm from sitting in the car, it was actually HOT. Not wanting to waste it, I tipped it back. I think from now on whenever I'm bored I'll take some Fuze and warm it up in the microwave. Hot tropical drink is good.