This is the 13857th most frequent Spanish word.
sigues
"Sigues" means "you continue" or "you follow" (informal, present tense).
In this case, 'sigues' implies the continuation of a manner or behavior.
Si sigues así, lograrás tus metas.
If you continue like this, you will achieve your goals.
The word 'sigues' is used here to indicate continuity of action, asking if the studying still persists.
Sigues estudiando para el examen, ¿verdad?
You continue studying for the exam, right?
Here, 'sigues' refers to the persistency of a state, asking if the interest remains.