The layer that encloses and protects the heart is
Pericardium
What I would do after learning more about good communication skills, is start an interesting topic with a friend. I would make sure to keep eye contact, and maintain good body behavior. By doing this, I will seem fully in the conversation. Another good idea when communicating with someone, is to think before you speak., knowing what you're going to say next will definitely make it easier to speak clearly.
I know because breakfast for example, helps you take on the day and gives you energy. If you eat fruits and vegetables you can improve wellness because you are helping keep your immune system up and it can fight off sicknesses. It's not that optional...... it can help you in many different ways. Hope I helped!