A regime of gentle exercise undertaken before some strenuous exercise or sport(noun)
Present participle of warm up.(verb)
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Use "warming up" in a sentence
"Brattleboro, Vt. (AP) - While the other preschoolers were warming up to the vegetable pesto lasagna, 3-year-old Avery Bennett dived in with no hesitation."
"Dr. Michaels claimed that he typically experienced his hands warming up and even becoming hot when Dr. Jones was ready to work with him."
"Long Island, for years a bastion of antidevelopment sentiment, is warming up to rental-apartment projects as demand for them grows from people either unwilling or unable to buy single-family homes."