this is what actually happens during sleep paralysis you'll feel like you're awake and you can still hear and see things but you can't move your body because it's still asleep it might last a couple seconds or a few minutes and during that time you can't really move or speak people have reported feeling a weight on their chest like someone is standing or sitting on it additionally you might feel a lot of fear because of a nightmare sleep paralysis typically happens right before you fall asleep or right before you wake up