Can a combo of caffeine and exercise increase immunity to skin cancer?

If you heard that combining caffeine and exercise would help prevent skin cancer would you believe it? I don't know what one has to do with the other, but according to the study discussed here, somehow a mix of the two does increase immunity -- well, in mice at least.

Four groups of hairless mice were tested in total. One group ran on a wheel, the second consumed caffeinated water (the equivalent of a cup or two of coffee a day for a human), the third exercised and drank the water and the fourth, a control group, did neither. All mice were exposed to UVB rays.

The study measured each group's rate of apoptosis. This, the study states, is the rate at which the body instructs damaged cells to destroy themselves. Many skin cancers are caused when the body is unable to rid itself of cells that have been badly damaged by sun exposure.

The results were pretty impressive. Compared to the control group, the mice that drank caffeine showed a rate of apoptosis that increased by 95%, while the group on the wheel's rate increased by 120%. Those that both exercised and consumed caffeine had their rate of apoptosis increase by a whopping 400%! While studies on mice don't always apply to humans, it may be an interesting start to preventing skin cancer.