Russian Twist

Most core training focuses on flexion (crunches) or stability (planks) — and both are valuable. But the core has a third critical function that gets neglected: rotation. Every time you reach across your body, turn to look behind you while driving, swing a golf club, or twist to grab something off a shelf, your obliques are generating and controlling rotational force. The Russian twist trains this pattern directly. The seated, leaned-back position creates a challenging environment for the rectus abdominis (front abs) and hip flexors to maintain posture, while the rotation under load directly targets the internal and external obliques. This combination makes the Russian twist one of the most efficient core exercises available — it hits the front of the core and the sides simultaneously in a single movement. For functional core strength that transfers to daily life, rotation training is not optional.

The Russian twist is safe and effective after 40 — but only with proper form. The most common mistake at any age is rounding the lower back and using momentum to whip side to side, which places shear force on the lumbar spine. After 40, spinal discs are less resilient and recover slower from strain, making this form error more consequential. The fix is straightforward: keep your chest up, maintain a neutral spine, and rotate slowly with control. Pause briefly at each side. If your lower back rounds or you feel strain, reduce the lean-back angle or keep your feet on the floor instead of elevated. Speed is irrelevant — a slow, controlled twist with good form is dramatically more effective (and safer) than rapid sloppy reps. Start with bodyweight only and add resistance (a water bottle, light dumbbell, or book) only after your form is consistent.