- Main muscle
- Lower Back
- Also works
- Glutes, Hamstrings
- Equipment
- None needed
How to do it
- Start on your hands and knees, hands under your shoulders and knees under your hips.
- Brace your core and reach one arm forward and the opposite leg back until both are level with your body.
- Pause, bring them back, and switch sides.
Common mistakes
- Arching your lower back as the leg goes up.
- Rushing, so your hips tip from side to side.
Know what to lift next
Iron Streak puts lifts like the Bird Dog into a weekly plan built around your goal, schedule and equipment. Every set shows the weight and reps to aim for, and your streak keeps score.