Focusing on a sore spot can calm your immune system
Neuroscientist Liron Rozenkrantz and colleagues at Bar-Ilan University ran a strange little experiment: they gave 37 healthy volunteers the standard histamine skin-prick allergy test twice, once while they focused on the itchy, reddened patch it produced, and once while they watched distracting videos instead 96.
Focusing on the sensation made it feel worse, as expected. But the actual swelling, the wheal, came out smaller when people paid attention to it: 3.5 millimeters on average versus 5.0 millimeters when they looked away. A second, 20-person experiment that varied what people focused on found the same pattern, meaning it really was the attention itself doing the work, not the specific thing being focused on. The paper, published in Nature Human Behaviour, describes it as the first evidence of "a causal link between attention and immune regulation in vivo" 96.