By Sophia BennettUpdated November 2026
People searching for the best side abs exercises usually want to strengthen the obliques and the muscles along the waist, without spending hours on floor crunches. The right tool or movement can make that practical at home. This guide compares six products that support side-focused ab training, based on what manufacturers specify, how each design loads the core, and patterns that owners commonly report. Selection criteria included the type of side-bending or twisting motion each product allows, adjustability, stability, footprint, load capacity and how well it fits a home routine.
Our top picks at a glance
- 1
TOP CHOICEBest overallMERACH Waist Twister Machine ExerciseView on Amazon - 2
TOP CHOICEBest for small spacesMERACH Independent Dual Tracks Ab MachineView on Amazon - 3
TOP CHOICEBest for rolling core workAb Roller Wheel with Knee PadView on Amazon - 4
Best for guided movementMERACH Ergonomic Arc Track Ab MachineView on Amazon - 5
Best for heavier loadsRELIFE Dual Track Ab MachineView on Amazon - 6
Best multi-station optionBigzzia 5-in-1 Ab MachineView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| MERACH Waist Twister Machine Exercise | Rotational oblique work | Two-pedal twist design, 300 lb capacity |
| MERACH Independent Dual Tracks Ab Machine | Small spaces | Foldable, 440 lb load rating |
| Ab Roller Wheel with Knee Pad | Rolling core control | Knee pad accessory |
| MERACH Ergonomic Arc Track Ab Machine | Guided ab movement | Arc track, foldable storage |
| RELIFE Dual Track Ab Machine | Users wanting higher resistance | 440 lb rated, dual tracks |
| Bigzzia 5-in-1 Ab Machine | Varied home workouts | Five training modes, 330 lb rating |
MERACH Waist Twister Machine Exercise
Slimmer Waist & Toned Abs, 300 lbs Capacity, Two-Pedal Design, Double Anti-Slip, Noiseless Use MERACH Waist Twister Machine Exercise, Ab Twist Board,300 lbs Capacity
Best for: Rotational work that targets the obliques through controlled twisting.
This is a good fit for someone who wants a dedicated side-focused tool and is comfortable following a slow, steady twisting pattern. It suits people training at home who have limited floor space.
Key specs:
- Two-pedal design for alternating side movement
- Anti-slip footing
- 300 lb stated capacity
Pros:
- Directly trains rotation and side-to-side motion
- Compact footprint for home use
- Quiet operation as described in the listing
Cons:
- Rotation can be overdone if you rush reps, which strains the lower back
- Limited to twisting patterns rather than full ab variety
Bottom line: Best for anyone whose main goal is oblique and waist-focused training with a simple, dedicated machine.
MERACH Independent Dual Tracks Ab Machine
Independent Dual Tracks for Mountain Climber for Home Gym, Foldable for Home Exercise, Load Capacity 440 LBS, Space-Saving MERACH Ab Machine, Adjustable Ab Trainer Machine, AB Workout Equipment
Best for: Small home gyms where space is limited.
Works well for people who want a foldable machine that can be stored after use. The independent tracks let you adjust the movement path to suit your range.
Key specs:
- 440 lb stated load capacity
- Foldable frame for storage
- Adjustable trainer design
Pros:
- Space-saving when folded
- Independent tracks allow side-to-side variation
- High stated load capacity
Cons:
- Setup takes a few minutes each time if you fold it often
- Track movement can feel stiff until it is broken in, according to some owner reports
Bottom line: A strong choice for apartments or shared spaces where you need to store equipment between sessions.
Ab Roller Wheel with Knee Pad
Ab Roller Wheel, Abs Workout Equipment for Abdominal & Core Strength Training, Home Gym Exercise Wheels for Men Women, with Knee Pad Accessories
Best for: Rolling core control with added anti-extension and lateral stability work.
A practical option for people who already know basic rollout positions and want a simple, low-cost-to-own tool that works the abs and obliques as stabilizers. Beginners should start from the knees.
Key specs:
- Single-wheel roller design
- Includes a knee pad accessory
Pros:
- Simple to use and store
- Knee pad protects joints on hard floors
- Good for progressive loading as strength improves
Cons:
- Requires some core strength to control safely
- Less direct side bending than a dedicated twisting machine
Bottom line: Good for intermediate trainers who want a versatile, portable core tool.
MERACH Ergonomic Arc Track Ab Machine
Ergonomic Arc Track for Better Abs, Foldable Workout Machine for Full Body Workout Home Exercise, Space-Saving Storage MERACH Ab Machine, Adjustable Dual Track Ab Trainer Machine
Best for: Guided, controlled ab movement with a defined path.
Suits people who prefer a machine that guides the motion, which can help when learning to isolate the obliques without momentum.
Key specs:
- Arc track movement path
- Foldable for storage
- Adjustable dual track trainer
Pros:
- Guided path reduces swinging
- Foldable, easy to store
- Works for a range of ab movements
Cons:
- The arc may not suit every body length without adjustment
- Fewer side-specific options than a dedicated twist board
Bottom line: A solid pick for beginners who want structure and controlled motion.
RELIFE Dual Track Ab Machine
Foldable Abdominal Workout Trainer, Independent Ab Workout Equipment for Home Gym, Core Strength Training Gear 440 LBS RELIFE REBUILD YOUR LIFE Dual Track Ab Machine, Exercise Equipment
Best for: Users who want a sturdier frame and higher resistance range.
A good match for people who have outgrown lighter machines and want more room to progress across ab and side movements.
Key specs:
- 440 lb stated load capacity
- Foldable abdominal trainer
- Dual track design
Pros:
- High stated load rating for progression
- Foldable for home storage
- Dual tracks support varied movement
Cons:
- Heavier to move than lighter designs
- Assembly and fit adjustments take time
Bottom line: Best for intermediate to advanced trainers who want room to progress.
Bigzzia 5-in-1 Ab Machine
Bigzzia Ab Machine, 5-in-1 Adjustable Ab Workout Bench Core Abdomen Trainer for Stomach Workout, Crunch Machine Exercise Equipment for Home Gym – Sit UP, Push UP, Leg Press, Glider, Roman Chair, 330lb
Best for: Varied home workouts that combine several ab and core movements in one unit.
Useful for someone who wants more than side work and prefers one station that covers multiple exercises, including crunch and leg-based movements.
Key specs:
- Five-in-one configuration
- 330 lb stated capacity
- Adjustable bench design
Pros:
- Multiple training modes in one machine
- Covers upper and lower abs and core
- Good value for a varied routine
Cons:
- Larger footprint than single-purpose tools
- Side-specific work is less focused than a twist machine
Bottom line: A good all-in-one choice if you want side work as part of a broader ab routine.
Buying Guide
Movement type
Side ab work depends on lateral flexion and rotation. Twisting machines and angled tracks target the obliques more directly than straight crunch machines. Check whether the product allows controlled side bending or rotation.
Good picks for this: MERACH Waist Twister Machine Exercise, MERACH Ergonomic Arc Track Ab Machine
Load capacity
Manufacturers state load ratings such as 300 lb, 330 lb or 440 lb. A higher rating generally means a sturdier frame, which matters for controlled movement under resistance. Choose a rating well above your body weight.
Good picks for this: RELIFE Dual Track Ab Machine, Bigzzia 5-in-1 Ab Machine
Size and storage
Measure your floor space before buying. Foldable frames help if you train in a shared room. Note the folded dimensions in the product specs.
Good picks for this: MERACH Independent Dual Tracks Ab Machine, MERACH Ergonomic Arc Track Ab Machine
Stability and footing
Look for anti-slip pads or a wide base. Unstable equipment makes it harder to keep the spine neutral, which reduces the benefit of side work.
Good picks for this: MERACH Waist Twister Machine Exercise, RELIFE Dual Track Ab Machine
Adjustability
Adjustable tracks or handles let you change the difficulty and range. This helps as your strength improves across weeks of training.
Good picks for this: Bigzzia 5-in-1 Ab Machine, MERACH Independent Dual Tracks Ab Machine
Use case
Decide whether you want a dedicated side tool or a multi-purpose machine. Dedicated tools give more focus on obliques. Multi-station machines cover broader core work.
Good picks for this: Ab Roller Wheel with Knee Pad, Bigzzia 5-in-1 Ab Machine
Durability and care
Wipe down frames and tracks after use and check fasteners periodically. Owners commonly report that loose bolts are the first sign of wear, so tighten hardware on a regular schedule.
Good picks for this: RELIFE Dual Track Ab Machine, Ab Roller Wheel with Knee Pad
FAQ
What are the best side abs exercises?
Common options include side bends, Russian twists, standing cable or band chops, side planks and controlled machine twists. Choose movements you can perform with good form and gradually increase load or range.
How often should I train my obliques?
Two to three sessions per week is a common approach for most people, with rest days between hard sessions. Adjust based on recovery and how your lower back feels.
Can side ab work help my waistline?
Training the obliques builds muscle, but it does not selectively reduce fat from the waist. Overall body composition depends on diet, total activity and consistency.
Are twisting machines safe for the lower back?
Controlled, slow movement is generally better tolerated. Rushed rotation can strain the lower back. If you have back pain, consult a doctor or physical therapist before starting.
Do I need a machine for side ab exercises?
No. Bodyweight side planks, bent-over side bends with a dumbbell and cable chops all work well. Machines add guided structure and adjustable resistance.
Is an ab roller good for the obliques?
It works the obliques as stabilizers during rollouts, but it is less direct than rotational or side-bending movements.
How do I progress side ab training?
Increase time under tension, add resistance, or move from easier to harder variations such as side plank with a leg lift. Progress only when form stays clean.
Conclusion
For direct oblique work, the MERACH Waist Twister Machine Exercise and the MERACH Ergonomic Arc Track Ab Machine offer the most focused side and rotational movement. Choose the Ab Roller Wheel with Knee Pad if you want a portable tool for stabilization work, and the RELIFE Dual Track Ab Machine or Bigzzia 5-in-1 Ab Machine if you need higher load ratings or a multi-station setup. Match the pick to your space, experience and goals, and consult a professional if you have existing back or core concerns.
Sources
- General guidance on how often adults should do muscle-strengthening activities each week (cdc.gov)
- Position statements on resistance training principles for core and whole-body strength (acsm.org)
- Research summaries on core muscle function and lower back health (nih.gov)
Related reading
- 7 Best Women's Abs Exercises: 7 Picks Compared for Home Training (2026)
- 7 Best Kettlebell Exercises for Abs Picks Compared (2026)
- 5 Best Exercises for Abs with Weights: Expert Picks Compared (2026)
- What Are the Best Exercises for Improving Core Strength? 8 Moves That Work
- Perfect Abs Ab Roller: 8 Best Ab Rollers Compared for Core Training (2026)
About Sophia Bennett
Sophia covers core & abs, comparing specs, features and long-term owner feedback to help readers choose with confidence.
