Anna is a 12-year-old middle school student. She is of medium build, and she is very healthy. She sleeps for at least 8 hours every night. She exercises three to five times a week, and almost eats fruit and vegetables every day. She hardly ever eats junk food and drinks coffee. Her favorite food is banana milk shake, and she can make it by herself. First, she peels the bananas and cuts them into pieces. Then, she puts them into the blender. Next, she pours some milk into the blender. Finally, she turns on the blender. After that, a delicious banana milk shake comes out, she can enjoy it happily. OK, this is Anna, a healthy and smart girl. Do you want to make friends with her?