Phrasal verbs are multi-word verbs that, like single-word verbs, convey action of the body or mind or occurrences. Phrasal verbs consist of a basic verb + another word or words, usually a preposition or adverb. Example: speak (basic verb) + up (preposition)
Phrasal Verb:
limber someone or something up
Meaning:
to make someone or something more flexible or loose.
Example:
Let me give you a massage; that will limber you up.