[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-C2-1611":3},{"preview":4,"open":14,"missing":37},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":13,"instructions":14,"excerpt":15,"prompts":16,"lock":19,"access":20,"updated":21,"previous_id":22,"next_id":23,"previous":24,"next":28,"first":32},1611,36,70,"C2","reading","multiple_matching","reading_multiple_matching","The Architecture of Sleep","the-architecture-of-sleep",null,"Stage 1 sleep marks the threshold between wakefulness and sleep, a fleeting interlude characterized by a deceleration of brain activity and physiological processes. During this brief phase - typically lasting only a few minutes - alpha waves give way to theta rhythms, eye movements slow, and muscle tone begins to…",[17,18],"Which stage is characterized by the appearance of sleep spindles and K-complexes?","Which phase is marked by dominant delta brainwaves and is critical for physical recovery?","login","pro","2026-10-02T14:14:49",1610,1612,{"id":22,"number":25,"title":26,"slug":27},35,"Technological Enhancement","technological-enhancement",{"id":23,"number":29,"title":30,"slug":31},37,"Paths to Prosperity","paths-to-prosperity",{"id":33,"number":34,"title":35,"slug":36},1576,1,"The Art of Saying","the-art-of-saying",false]