Increased or raised something, or in the phrase 'up and' it means suddenly did something.
From 'up,' a Germanic word meaning upward, which developed a verb form in English meaning 'to raise or increase.' The past tense 'upped' became common in informal usage by the 1800s.
The verb 'up' is deceptively old—it appears in Shakespeare ('I'll up your stakes'), but it only became truly colloquial in American English, where phrases like 'he upped and left' became common enough to feel natural.
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