skipping breakfast doesn't actually make your brain foggy
the idea [that skipping breakfast causes brain fog] is basically a leftover from 20th-century breakfast cereal marketing campaigns.
Humans evolved to stay sharp while hungry because missing out on a mammoth meant you still had to be smart enough to catch the next mammoth that came along.
You only see a drop after 24 hours or more without food, or, as the researchers cruelly found out, if someone flashes pictures of food at you when you’re on an empty stomach. People were just fine starting their days without a meal until they were enraptured by the alluring visuals of pizza and burgers, which the mere sight of made them slower and less focused.
Interestingly, what you believe about fasting might matter more than the food itself. People who thought skipping meals would help them focus actually performed better, while those expecting to feel foggy did worse. The most fascinating outcome of this research might be that nutrition is more psychological than physical.











