BMARCHAI Open the free app

Straight Arm Bodyweight Russian Twists on Situp Bench

Increases rotational core demand by keeping the arms straight and extended.

Core & AbsIntermediateStrengthRotation

At a glance

Muscles workedPrimary: obliques. Secondary: abs, core
Muscle groupCore & Abs
DifficultyIntermediate
TypeStrength · Rotation
Sets & reps3 sets × 12-16 total
Estimated calories burned~5 kcal

How to do it

  1. Sit on the sit-up bench leaning back slightly with arms extended straight in front.
  2. Rotate the torso side to side while keeping the arms straight.
  3. Keep the core braced and feet secure.
  4. Control the movement in both directions.
  5. Repeat for the desired number of reps.

Equipment

Coaching tips

Benefits

Increases rotational core demand by keeping the arms straight and extended.

Common mistakes

Avoid rounding the lower back or swinging the arms for momentum.

Make it harder

Slow the tempo or add a light weight.

Make it easier

Bend the elbows or reduce the range of rotation.

Breathing

Exhale as you rotate, inhale as you return to center.

Build a workout with this exercise

Plan sessions, track your progress and match your meals to your training, free.

Try it free in Bmarchai

More core & abs exercises

General fitness and nutrition information, not medical advice. Check with a qualified professional before starting a new exercise or diet plan, especially if you have an injury or health condition.