Get fit in 2016 with Tone It Up's Karena and Katrina

- Karena and Katrina of stopped by Good Day LA on Monday for a quick partner work out to do over the holidays.

Enjoy family and good food -- and once 2016 rolls around, you can get a running head start! They have an 8-week fitness challenge that begins January 3 with everything you need to get in great shape.

The challenge includes a daily workout schedule, ideas for other toning workouts, tips and inspiration from Karena and Katrina and more.


Watch the full partner workout in the video above.

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