I have read and heard several places that when drinking water, the colder the better. The theory is that your body needs to use energy to warm the water. I'm not saying this is a definite truth, but it certainly makes sense.
If this is the case, wouldn't this also hold true for food? For example. Take an apple. If I eat an apple that is kept in the fridge, versus one on the counter wouldn't the same theory hold true?
I realize that this is not going to make a big difference in calories burned versus the actually calories in food. But over time say a year, how many more calories would be burned if a person puts their fruit in a fridge. Or maybe, cranks their fridge just a little more, so that things are just a little colder. Water, milk, yogurt, fresh veggies, etc.
I maybe just blowing smoke here, but some food for thought on a Saturday afternoon. No pun intended.