Fast forward four weeks and we see the following: The time it took participants to fall asleep, or sleep latency, reduced from about 30 minutes to fall asleep down to 18 minutes, a 12-minute improvement.

快进四周，我们看到了以下情况：参与者入睡所需的时间或睡眠潜伏期从大约30分钟减少到18分钟，进步了12分钟。