Classic oblique abdominal exercise: proper technique, muscle activation, common mistakes and variations.

Russian Twist is a dynamic exercise targeting the oblique abdominal muscles (obliques). It is performed seated, with the torso inclined, rotating the torso from side to side. It is one of the most effective exercises for the lateral abdominal muscles, helping to shape a "V"-shaped torso and strengthen rotational core stability.
Internal and external oblique abdominal muscles.
Rectus abdominis, transversus abdominis, hip flexors.
Isolation, rotational exercise for the core.
Easy–moderate. Suitable for everyone — with body weight or with a weight.
| Muscle Group | Muscle | Role |
|---|---|---|
| Abs (Sides) | External Obliques (external obliques) | Primary — contralateral rotation |
| Abs (Sides) | Internal Obliques (internal obliques) | Primary — ipsilateral rotation |
| Abs (Center) | Rectus Abdominis | Stabilizes the torso in the leaned-back position |
| Core (Deep) | Transversus abdominis | Internal Stabilization |
| Variation | Description | Difficulty |
|---|---|---|
| Without Weight | Body weight — hands together in front of the chest. | Lightweight |
| With Dumbbell/Medicine Ball | Held weight — increases resistance. | Intermediate |
| With Raised Legs | Feet in the air — increases core load. | Intermediate |
| With Kettlebell | Held kettlebell — greatest resistance. | Hard |