Mini-Study Session Help

During my workday I have a ton of 5-7 minute chunks of time (probably around 15x a day) where I am just twiddling my thumbs (right now I am answering phones for a living). I was wondering if anyone had and good ideas/tips about how I can utilize these awkward moments during the day. I have tried doing practice problems but it’s difficult to get in a groove because I am always interupted abruptly the second I can realy get anything going…

Suggestions anyone?

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