1. to make an audience enthusiastic or animated before a show
2. to reach a normal operating temperature (of a car for example)
3. to reheat food
4. to become warmer
5. to prepare for executing an already-learned activity by a limited amount of additional practice.

1. cause to do preliminary exercises so as to stretch the muscles
2. get warm or warmer
3. become more friendly or open
4. run until the normal working temperature is reached
5. make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity