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Bodyweight progression

Bird Dog

Trains core first, with real work landing on glutes, erectors.

Muscle contribution per set

Core1
Glutes.20
Erectors.15

These are the weights Forge's volume audit actually computes with — deliberately conservative, so compounds don't masquerade as full coverage. A 0.5 means a set counts as half a set for that muscle: meaningful help, not a replacement for direct work.

Tempo

3down
1pause
2up
1squeeze

Slow, braced movement with pauses builds anti-rotation and core stability; tempo forces deliberate control.

Opposite arm/leg; maintain neutral spine and level hips.

Derived from tempo research on this movement class — Schoenfeld BJ, Ogborn DI, Krieger JW.

How Forge progresses it

Progresses by reps, not weight — you earn harder sets, longer holds, or extra reps rather than plates.

Train with intention. Open Forge — it prescribes the weight, watches the reps, and does this arithmetic for every set you log.