The Hulk was supposed to be grey. Creator Stan Lee initially wanted the Hulk to be grey, but due to ink problems, the Hulk turned out green. However, the misprint was explained in canon as the two Hulk personas (Grey vs. Green) fighting in Bruce Banner‘s subconscious.
100 Mind-Blowing Subconscious Facts
People born blind experience dreams of emotions, sounds and smells instead of images. Dreams are a product of our subconscious that is influenced by the stimuli we encounter in waking hours. For people who were born blind, their dreams manifest in other sensations such as smells and sounds.
Craving ice is a symptom of iron deficiency. If you like munching on ice, you might have anaemia. The compulsive eating of ice is also known as pagophagia and could be a subconscious way of cooling mouth inflammation caused by iron deficiency.