What is the name for the sudden brief muscular contractions that may awaken individuals that occur in stage 1?

answer; hypnagogic sensations)

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."

cells spend most of their time in interphase