complete the sentences and the text below with these phrasal verbs pig out put on work out build up keep up burn off tire out put on stretch out

Here are the completed sentences with the phrasal verbs: 4. I always feel guilty after I **pig out** at the Chinese restaurant. 5. Yoga helps to **build up** my muscle. 6. You should **warm up** before you exercise or you might do your muscles in. 7. I think I ate too much at Christmas. I've **put on** two kilograms. 8. I'll never go to a circuits class again. The last one nearly did me in. The other people were really fit so I struggled to **keep up**. 9. Just the thought of exercise **tires me out**. As for the text, here's an example of how these phrasal verbs can be used: When it comes to exercise, it's essential to **warm up** before you start to **work out**. If you don't, you risk **tiring out** or even injuring yourself. It's also important to **keep up** a regular routine, whether it's going for a run or practicing yoga to **build up** your strength. If you overindulge in food, like I do when I **pig out** at the Chinese restaurant, you might need to **burn off** those extra calories. However, don't forget to **stretch out** after your exercise to prevent any muscle strain.