To be healthy vs illness (You must study this)

- I am healthy.
- I'm sick or I am ill.
- I have a high fever.
- I have a headache.
- I have a stomachache.
- I am exhausted = I am very tired.
- Virus -> A cough, cold, flu, vomiting and sore throat.
- Pain = my leg hurts.
- I am not feeling well = I'm felling bad.
- Good habits vs bad habits.
- Accident and stress.