In school, students may often spend many hours confined to a desk as they have one lesson then another.
Physical movement can also be important for other reasons.
If students can be physically involved with English, it can lead to deeper, more long-lasting learning as the language becomes more 'concrete' to them and involves them as whole persons. Many games that work successfully with younger students may appear 'childish' to adolescent students. They are probably more useful in teaching beginning students, however, with the teacher saying a verb and the students doing the action. It may be possible to involve more physical movement simply by moving to another place. It may, for example, be possible to have the English lesson outside in a playground or in the hall, where the students will be standing up.