
Side Plank
Obliques


Core / Beginner / Isolation (single joint)
A barbell isolation exercise for the obliques and abs, with the lower back assisting.
Why it hurts: The weights cancel out and you just flex the spine side to side.
✓ Instead: Hold one weight, bend slowly to the side and return by pulling up with the opposite obliques.
Why it hurts: Combined side bending and rotation loads the discs.
✓ Instead: Move only sideways, as if between two panes of glass.
How specific this exercise is to each movement.
Photos and instructions: free-exercise-db (github.com/yuhonas/free-exercise-db), public domain.