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Researcher's findings reveal that salt intake needs to be substantially reduced for children and patients with essential hypertension. Preference for salty food can form poor eating habits that continue into adulthood, resulting in health problems, such as cardiovascular disease later in life. Inspired by hourglass, I redesigned the salt shaker. The Hourglass salt shaker can precisely control the daily salt intake by only pouring out salt at the bottom of the shaker each time.The rest of the salt will flow back into the glass, making sure only the appropriate amount is poured out.