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Russian Twist

Primary target: External Oblique (腹外斜肌)

Exercise Details

Equipment
Med ball/weight plate
Sets & Reps
3 sets × 10-15 reps per side · rest 60 s
How to do it
Seated, leaned back 45°, feet optionally off the floor; the thoracic spine drives the rotation to tap the ball on each side; the obliques work, the arms don't fling; even rhythm.
Common mistakes
Only the arms swinging (torso doesn't rotate), rounded back, out-of-control speed

Muscles Worked

External Oblique

Other Exercises for the Same Muscle

Side Plank · Dumbbell Side Bend · Pallof Press

See the External Oblique in the 3D anatomy tool →