Because you don't have a steady stream of carbs to fuel your brain. Protein at meals helps time-release the carbs for steady energy rather than up and down spikes. If you're relying only on fleeting foods, such as crackers or bread, you'll only experience short bursts of mental energy, followed by the fog.
About SonarQube SonarQube is an open source platform to perform automatic reviews with static analysis of code to detect bugs, code smells and security vulnerabilities on 20+ programming languages including Java, C#, JavaScript, TypeScript, C/C++, COBOL and more.
Echolocation, also called bio sonar, is the biological sonar used by several kinds of animals. Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects.