1. warm up
Today we are going to learn “warm up”. If you warm up for an event such as a race, you prepare yourself for it by doing exercises.
A: If you don’t warm up before exercising, you will injure yourself.
B: No wonder my legs still hurt so bad from last week’s workout.
2. I’m beat
Another phrase is “I’m beat”. It means I am really tired in spoken English.
A: I’m beat. I’ve been running around all day.
B: Give me a minute, and I’ll make you a cup of coffee.