Shout Out is a no prep game that can be used when students are in need of a break to release some energy. Games like this, while loud can be done in a controlled way that will help students focus on the next task. More brain break activities for teen and young learners can be found here.
This activity is very simple. First, the teacher calls out a letter and students have to say or shout (or even whisper!) a word with that letter. The student who says the word first gets a point (or other reward).