Do two things at the same time (ながら)
Attach ながら to a verb stem to show that you are performing that secondary action while doing the main action that follows.
JLPTN5
[verb stem] + ながら[verb stem] + nagara
Simultaneous actions: do X while doing Y
When doing two things at the same time, attach 〜ながら (nagara) to the ます-stem (masu-stem) of the secondary background action, followed by the main focal verb:
- 音楽を 聞きながら 勉強します (I study while listening to music)
- コーヒーを 飲みながら 本を 読みます (I read a book while drinking coffee)
- 歩きながら 話しましょう (Let's talk while walking)
The main action is always the verb at the very end of the sentence. Both actions must be performed by the exact same subject.