The key to exercise solutions in chapter Focus Vlog 6 for the textbook Focus 3 (2nd edition) - Student's Book with authors Sue Kay, Vaughan Jones and Daniel Brawshaw from Pearson Education
Question
Watch the first part of the video (up to 0:59) and answer the questions.
Answer
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Going vegan, exercising more / taking up a new sport, sleeping more.
Not only do you need a certain amount of hours sleep, but you can also do things that will improve the quality of your sleep.