Теория:
To speak about your health. you need some words.
recently – недавно
do exercises – делать упражнения
be fit – быть в форме
be ill – быть больным, болеть
suppose – предполагать
pain – боль
health check – медицинский осмотр
eat fast food – кушать фастфуд
snack – перекус
sleep a lot – спать много
healthy – здоровый
Examples:
When will you have a medical check?
He is ill today.
Источники:
http://www.youngandraw.com/10-tips-for-raising-super-healthy-kids/