At the end of this research, I confirmed that the use of warm-up activities help students to have a positive attitude toward the lesson. However, the application of warm-up activities in adults or advanced students is sometimes considered as not necessary or a waste of time. For that reason, teachers only focus on the course book activities. It seems to be true that a warm-up activity is probably not the most necessary stage, compared with other stages of the lesson. However, after observing some classrooms, I proved that warm-ups create a good atmosphere in the classroom and not only during the activity, pupils showed to be more interested in the topic and exercises after the warm-up. Another reason to apply such activities is that students can practice the language in a safe environment, and interact each other without restrictions. I also, noticed that even when some teachers said they do not apply warm-ups in their lessons, they recognize the importance of these.
To conclude this paper, I just like to add that a warm-up activity is a wonderful tool to encourage students, it also helps to create a bond between teacher and students. However, it is not the tool itself, it is the way teachers motivate the learners to participate and how teachers make them feel comfortable.