How to do Diagonal Quadruped Core Extensions: Active Resistance Training® Tech Study

⚡️How to do Diagonal Quadruped Core Extensions in the  Active Resistance Training® tech study – 10 reps each side

After you finish your ending plank after the previous exercise, release your knees to the floor and maintain your hands on the blocks.

The diagonal core extension is a simple core exercise that focuses on stability, and encourages a neutral spine. The goal here is to keep your navel engaged and keep your ribcage closed and connected to your abdominal wall.

This sequence relieves low back pain by using the abdominal contraction to allow the lower back to stretch. It’s quite literally an upside down crunch. This strengthens your core, hips, and back muscles. It also promotes proper posture and increases range of motion.

– place your hands on the blocks and line up your wrists under your shoulders
– Line up your knees u der your hips
– Push down into the blocks and into the floor while pulling your navel up
– Extend the right arm and the left hip/leg away from your center. You should look at the floor.
– Push down into the left hand and right shin, simultaneously pulling the navel up and rounding your back while drawing your right elbow towards your left knee.
– Crunch up deeply and return to the beginning neutral spine position.
– Do ten reps. Repeat on the other side.

Remember the active resistance pressing downward into the floor creates the impetus to start the move. The arm/leg moves AFTER you engage by pushing down and pulling the navel in.

Now let’s practice!

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All levels. This 60 min stretch and mobility class will loosen your shoulders, stabilize your knees,  unkink your back and unlock your hips.

Equipment: Mat, 2 foam yoga blocks, a towel, exercise band or strap

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You will be sent a link to join the class via Zoom.


“All A.R.T. Method mat classes are entirely non-impact, total-body, joint-friendly, and designed to need only the space of your mat.”

“All A.R.T. Method mat classes are entirely non-impact, total-body, joint-friendly, and designed to need only the space of your mat.”

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Who is Terri Walsh?

Terri Walsh is the creator of the Active Resistance Training® Method, and a celebrity Trainer and 35 year veteran of the fitness industry in NYC. She now teaches online and Livestream fitness classes exclusively since her move to Costa Rica in 2014.

Terri was the first Creative Director of Programming at Crunch Fitness and she also headlined five different shows on Crunch Fitness’ ESPN2 including “Washboard Abs” videos. She created the “Yoga Block Workouts” which were featured in Self, Women’s Health, Shape, Crunch Gyms, and many more. Terri is an ACE Certified Group Fitness Instructor and Nutrition Specialist. She’s been interviewed, quoted, and featured in numerous beauty, fashion, print, and television media over the length of her continuing career.

See HERE for media where Terri Walsh is featured

Terri believes EVERYBody is a work of A.R.T. and that Movement Cures Everything.

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