A-drill marching is a running-specific warm-up drill that teaches proper hip flexion mechanics while activating the hamstrings and hip flexors. The “A” position — knee driven high with the toe dorsiflexed — trains the muscle coordination pattern used in sprinting and fast walking.

Setup

  1. Stand tall with feet together and arms at your sides.
  2. Drive your right knee up toward the chest (aim for hip height), pulling the toes up toward the shin (dorsiflexion).
  3. As the right knee drives up, swing the left arm forward naturally (opposite arm, opposite leg).
  4. Strike the right foot back down to the ground directly under your hips with a quick, pawing motion.
  5. Immediately drive the left knee up and repeat.
  6. March forward for 10–15 yards, or perform 10–12 reps per leg in place.

Coaching Cues

What to feel:

  • Hip flexors driving the knee up; hamstrings pulling the foot back down
  • An upright, tall posture — do not lean back or forward
  • The rhythm of opposite arm/opposite leg coordination

Common mistakes:

  • Leaning backward to get the knee higher — stay tall and let the hip flexor do the work
  • Pointing the toes instead of dorsiflexing — the “toe up” cue is critical for running mechanics
  • Landing on the heel instead of the midfoot — the foot should paw backward, not stomp forward

Video and animated demos coming soon.

Programming

Parameter Recommendation
Reps 10–12 per leg, or 2 x 15 yards
Sets 2–3
Frequency Before running or sprinting sessions
When to do it Hamstring rehab routine, pre-workout warm-up

Progressions

  1. Beginner: Slow march in place with wall support.
  2. Intermediate: Walking A-drill for distance at moderate tempo.
  3. Advanced: A-skip (add a small hop on the stance leg) for power and coordination.