This is the 2138th most frequent Spanish word.
cuidar
To take care of or look after.
In this case, the word cuides is used to express the act of giving attention and taking responsibility for one's health.
Espero que cuides de tu salud.
I hope you take care of your health.
Here, cuida means looking after and tending to someone younger or requiring assistance.
Ella cuida a su hermano menor después de la escuela.
She looks after her younger brother after school.
In this context, cuidar is used to signify protection and maintenance of the environment.