Yoshihiko Koga, a professor at Tokyo's Kyorin University, claims that eating ice-cold food immediately after waking up shocks the brain into an active state, increasing alertness and mental capacity. People who ate ice cream first thing experienced an increase in high-frequency Alpha waves, leading to boosted alertness and reduced mental irritation, The Daily Telegraph reported.
According to a recent study from Syracuse University, chocolate may help brain activity and cognition. The researchers had participants perform specific tests and in a long study showed this is a result, “Chocolate intake was significantly and positively associated with the Global Composite, Visual-Spatial Memory and Organization, Working Memory, Scanning and Tracking, the Similarities test (abstract reasoning), and the MMSE.”
Call me a health nut, or risk adverse but I'm not taking any chances. Chocolate cake with a scoop of ice cream for me, just to be safe :)