Targets: Total core, upper and lower abs. Beginner: Keep the knees bent.
Targets: Rectus abdominis, transverse abdominal muscles and obliques. Beginner: Keep your neck + shoulders on the mat.
Targets: Gluteus medius, gluteus minimus, obliques and core. Beginner: Omit the hip lift from the ground.
Targets: Obliques, transverse abs, upper abs and lower abs. Beginner: Omit toe touch and hold side plank.
Targets: Deep transverse abs, upper abs, lower abs, side abs, shoulders, back, glutes and quads. Beginner: Hold high plank.