Home / English / What happens when we wake up after a deep sleep? English What happens when we wake up after a deep sleep? Posted on12/08/202202/07/2022 Updated on02/07/2022 After waking up from deep sleep, our heartbeat and breathing become normal and we forget most of our dreams. Related posts: What is the most obvious advantage of sleep? What happens to our body when we sleep? Define a dream in your own words? Why are dreams important? Mention two reasons.