Phrasal Verbs using UP

to end your sleep, enter into an awake state

Tomorrow I have to wake up at 5am to catch my early flight.

to physically rise out of bed

Aaron woke up on time, but didn't actually get up until an hour later. Now he's running late.

to reach somebody ahead of you, physically or in studying/work etc.

You're walking too fast, give me a second to catch up.

Mike got sick and missed a week of class. He's going to have to work hard to catch up.

to spend time with family, friends or colleagues and share each other's latest news 

Over the holiday season we'll have plenty of time to catch up with family and friends we haven't seen in a while.

to express how you really feel about something, become more talkative

Lee opened up about the difficulties she had after moving to a new country.

Nick was shy as a boy, but has really opened up as he got older.