What it is
A hands-and-knees core drill using opposite arm and leg reach.

Exercise Library
Track bird dogs by reps per side, pause length, and trunk control.
Use these cues for app form guide popups and workout-log reminders.
These definitions match the app form-guide popup language.
Lightly tighten the midsection as if preparing for a cough while still breathing.
A comfortable spine position that keeps the natural curves without forcing a hard arch or tuck.
Repetitions performed with steady speed, body control, and no bouncing.