I really enjoyed your factcheck on this claim. Especially when it comes to the discovery that the consumption of ice cream in the morning may actually, though only temporarily, increase reaction time. I am glad that you included the risks of long-term consumption of high amounts of sugar, and why one absolutely should not eat ice cream for breakfast every morning. Though I agree that this is something that you should not do, I feel that, in relation to the effect of coldness on reaction time, I think it is extremely important to consider the possibility of the placebo effect. Were the subjects of the study made aware of the "benefits" of the ice cream before they took the test? If so, this could have had a huge impact over the observed "effects."