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Workouts· 2026-01-28

Oblique HIIT Workout Part 2 | Core HIIT Series - Crunch & Twist

Challenge your side abs with three killer moves designed to build rotational strength and oblique definition.

If you want a balanced midsection, you can't just train the six-pack muscles. Your obliques - the muscles down the side of your core - are essential for rotation, balance, and overall strength. This oblique HIIT workout will challenge your side abs with three killer moves.

The Workout

Format

  • 35 seconds work per move
  • 15 seconds rest between moves
  • 3 rounds total
  • Rest 1 minute between rounds

The Moves

1. Russian Twist

Builds rotational strength and endurance. Keep your core tight and twist from your torso, not just your arms.

2. Heel Touches

Targets the obliques with side crunching, great for definition. Reach down to touch each heel alternately while keeping your shoulders lifted.

3. Alternating Cross-Body V-Up

Combines a V-up with a twist, training abs and obliques together. This advanced move hits the entire core while emphasising rotation.

Why Obliques Matter

Strong obliques do more than make your core look sharp. They:

  • Protect your lower back from rotation injuries
  • Improve athletic power in sports like football, boxing, and golf
  • Build real-world stability and balance for everyday movements

Try It Now

Run this oblique HIIT workout for three rounds. Your sides will be on fire, and your rotational strength will get a serious boost.

Tip: Keep the twist controlled on Russian Twists - don't rush through it. Slow, deliberate rotation gives you maximum oblique activation.

Real transformations

The results speak for themselves.

Scotty Grant results
BeforeAfter

Scotty Grant

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Lee Bazzie Duncan results
BeforeAfter

Lee Bazzie Duncan

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Kirsty Duncan results
BeforeAfter

Kirsty Duncan

Mind Core Fitness client

Charlie Anderson results
BeforeAfter

Charlie Anderson

Mind Core Fitness client

James Ferguson results
BeforeAfter

James Ferguson

Mind Core Fitness client

Kara Gill results
BeforeAfter

Kara Gill

Mind Core Fitness client

Russell Anderson results
BeforeAfter

Russell Anderson

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Georgia Laing results
BeforeAfter

Georgia Laing

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Georgia Laing results
BeforeAfter

Georgia Laing

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Scotty Grant results
BeforeAfter

Scotty Grant

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Lee Bazzie Duncan results
BeforeAfter

Lee Bazzie Duncan

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Kirsty Duncan results
BeforeAfter

Kirsty Duncan

Mind Core Fitness client

Charlie Anderson results
BeforeAfter

Charlie Anderson

Mind Core Fitness client

James Ferguson results
BeforeAfter

James Ferguson

Mind Core Fitness client

Kara Gill results
BeforeAfter

Kara Gill

Mind Core Fitness client

Russell Anderson results
BeforeAfter

Russell Anderson

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Emily Paterson results
BeforeAfter

Emily Paterson

Mind Core Fitness client

Georgia Laing results
BeforeAfter

Georgia Laing

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Georgia Laing results
BeforeAfter

Georgia Laing

Mind Core Fitness client

Mike Mortz results
BeforeAfter

Mike Mortz

Mind Core Fitness client

Real results

Hear it from them.

Cliffy Forsyth

1-2-1 training

George McKimm

1-2-1 training

Jan Beattie

1-2-1 training

Kirsty Duncan

1-2-1 training

Mike Mortz

1-2-1 training

Will Robson

1-2-1 training

Don't want to plan it yourself? Let Core Buddy do it.

Tell Core Buddy how long you've got and what kit you have, and it builds the whole session for you — every move timed, every exercise with a demo video. Built for beginners, free to download — and the 30-day free trial covers the lot.

Download on the App Store Get it on Google Play
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