It's not hard to do a little studying each day once you get into a/the 'groove'. [='routine']
The door slides along a 'groove' in the doorframe.
He's a great pitcher when he's in a/the 'groove'.
(..) Honey, honey, honey, let me stop you. That is-is not a funny story. You want to come with us? I'm kind of getting into the groove here. Yeah, you guys run to the store and let the women handle the science for a change. LEONARD: Okay. We'll be back (..)2016 TvShow: The Big Bang Theory Title: The Solder Excursion Diversion Season: 9 Episode 19