• Abdominal Vacuum

• Cable
  • Side Bend
• Dumbbell
  • Side Bend
• Lever
  • Seated Side Bend
  • Side Crunch
  • Standing Side Bend
  • Twist
    • Twist (Gripless)
• Weighted
  • 45 Side Bend
  • Ball Side Bend
  • Incline Twisting Crunch
  • Incline Twisting Sit-up
    • Advanced
  • Lying Twist
  • Side Crunch
  • Twisting Ball Crunch
  • Twisting Crunch

Also see:

• Cable
  • Push Pull
  • One Arm Row
  • One Arm High Row
• Dumbbell
  • One Arm Straight Leg Deadlift
• Lever
  • One Arm Jam
  • Push Pull

Also see Rectus Abdominis exercises above.

• Stretch
  • Lying Bent Leg
  • Lying Crossover
  • Pretzel
  • Seated Bent Leg
• Plyometric
  • Broomstick Twist
  • Medicine Ball Twist
    • Seated
    • Standing

• See most Oblique Exercises above

• Barbell
  • Hyperextension
    • Back Extension
  • Hyperextension (45-degree)
    • Back Extension (45 degree)
  • Bent Knee Good-morning
  • Deadlift
    • Sumo Deadlift
  • Stiff-leg Deadlift
  • Straight-leg Deadlift
  • Trap Bar Deadlift
• Cable
  • Straight-leg Deadlift
  • Stiff-leg Deadlift
• Dumbbell
  • Straight-leg Deadlift
    • One Arm
• Lever
  • Back Extension
    • on older machine
    • on rehab machine
• Smith
  • Bent Knee Good-morning
  • Deadlift
  • Stiff-leg Deadlift
  • Straight-leg Deadlift
• Weighted
  • Ball Hyperextention
  • Hyperextension
    • Back Extension
  • Hyperextension (45-degree)
    • Back Extension (45-degree)

See Hamstrings for similar exercises.

Also see General Back exercises below:

• Cable
  • Seated Row
    • Wide Grip

See Splenius for exercises for Erector Spinae, Cervicis & Capitis fibers.

See Lower Back Exercises and Recuperation.

• Stretch
  • Cat
    • Movement
  • Bent-over Cat
  • Lever
  • Lying
  • Seated
  • Seated Bent-over (Chair or Bench)
  • Squatting
  • Plow

Also see certain Hamstrings stretches.

• Bodyweight
  • Contralateral Superman
  • Superman