梦与自然睡眠

做梦，到底是怎么回事呢？ 梦真的是随机的吗，还是有些规律，我们还没弄明白？ 睡眠一定要按固定的时间安排吗？ 有没有可能更顺着身体的节奏，自然而然地睡，也让身体和大脑恢复得更充分、更高效？

What exactly is going on when we dream? Are dreams truly random, or are there patterns we haven't yet figured out? Must sleep follow a fixed schedule? Is it possible to go more with the body's rhythm, sleeping naturally, allowing the body and brain to recover more fully and efficiently?