Crunch progression

From easiest to hardest. Move to the next step when you can do the current one with good form.

1. Crunch · Beginner · reps
   Lying on the back with knees bent and feet flat, hands lightly at the sides of the head, only the head, shoulders and shoulder blades curl about 10 cm off the floor while the lower back stays pressed down, then lower slo
2. Decline Crunch · Intermediate · reps
   Secure your legs at the end of the decline bench and lie down.