触摸者按照指示碰触任何适当的身体部位，他们选择碰触各个部位，头，脸，臂，手，肩，躯干和后背。

The touchers were instructed to touch any appropriate part of the body, and they chose variously to touch the head, face, arms, hands, shoulders, trunk and back.

youdao

如果你附近没有桌子或椅子，在建筑物墙角蹲下，用你的臂护住你的头和脸。

If there isn't a table or desk near you, cover your face and head with your arms and crouch in an inside corner of the building.

youdao

所以你觉得，直臂下压让你的头抬起，这个坏习惯如何呢？

So, what does bad technique - pushing your head up with a straightened arm - feel like?

youdao