Technique:

• Kneel on all fours
• Keep your head up facing forward
• Let your back slump downwards

Primary muscles: Gluteus maximus.
Secondary muscles: Transversus abdominis. Rectus abdominis.

Injury where stretch may be useful: Neck muscle strain. Whiplash (neck sprain). Cervical nerve stretch syndrome. Wry neck (acute torticollis). Back muscle strain. Back ligament sprain.

Note: Distribute your weight evenly on both your hands and knees and perform this stretch slowly and carefully.