Name four body systems that are involved in getting oxygen to your cells

respiratory, circulatory, muscular and nervous

The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. Cellular respiration requires glucose, or sugars, which you get from food, in addition to oxygen, which you get from breathing. These materials are transported to every cell in your body through blood vessels

Caffiene and drowezyness medication

They probably don't understand either 1. what the nightmare is about or 2. his anxiety and stress