5 Hardcore Celebrity Ab Routines to Motivate You In 2015—Watch Now!

Jessica Alba, Brooke Burke-Charvet, Padma Lakshmi: Try These Celebs' Hardcore Ab Workouts!

You know what January means? Time to start on those New Year fitness resolutions. Like, immediately. Chop, chop!

If one of your goals happens to be tummy-focused then stick around because we've rounded up five hardcore ab workouts that are sure to whittle your middle in no time. Or, more accurately, in just a few weeks. 

That's right, we're borrowing a few workout tricks from Jessica Alba, Brooke Burke and more celebs with fab abs. So allow Instagram to become your personal trainer by watching these videos below. 

A video posted by Kendall Jenner (@kendalljenner) on Oct 10, 2014 at 11:58am PDT

How does Kendall Jenner keep her stomach trim? The Keeping Up With The Kardashians star's trainer Gunnar Peterson puts her to work with some challenging exercises.

Peterson instructs the 19-year-old to keep her feet up and core engaged while throwing a ball overhead at the trampoline. If you don't have a trampoline, try substituting a friend. The model makes it look easy, but we're pretty sure it'll only take a few reps to feel the burn.

A video posted by Jessica Alba (@jessicaalba) on Nov 11, 2014 at 7:44am PST

Jessica Alba has always been known for having one of the best bodies in Hollywood, and the mother of two works hard for that title. Her Instagram video teaches us how to combat that lower belly bulge.

Alba admitted she was sore after putting herself through a series of ab-shredding double-leg lifts.

A video posted by Padma Lakshmi (@padmalakshmi) on Nov 11, 2014 at 8:52pm PST

Another difficult drill is Padma Lakshmi's extremely intense plank routine. If you're not in the same shape as the Top Chef host, try doing this without the pushups and weights.

A video posted by 7dub (@7dub) on Oct 10, 2014 at 7:56am PDT

Have you seen Idris Elba's abs lately? Let's just say, they're inspiring to say the least. The 42-year-old actor is shirtless and sexy in his workout video. While on his knees, Idris clasps his hands to a barbell, then uses his ridiculously defined ab muscles to roll the bar back and forth.

A photo posted by Brooke Burke (@brookeburke) on Jan 1, 2014 at 8:26am PST

Alright, ready for your last ab challenge? Brooke Burke-Charvet shows us how to work those obliques with a triangle crunch. 

The brunette beauty has several fitness tips for those focused on getting back in shape, like, "If you're not sweating, you're not working out hard enough." Well said, Brooke!