Sprint in Place

Setup

- Use a stable, non-slip surface and clear enough space for the full movement and a safe stop.

- For Sprint in Place, keep the implement, grip, support and direction shown by the name and, when available, the image. If that setup is unavailable, choose an offered alternative instead of improvising another exercise.

- Stand over the mid-foot with elbows bent, clear the floor and begin at an easy cadence.

Execution

- Alternate the knees and opposite arms, land under the hips and keep each contact light and brief.

Range, tempo and breathing

- Complete 4 × 10–30 seconds at a repeatable pace. Build up gradually and keep acceleration and braking inside any measured distance.

- Keep breathing continuously behind a steady brace. Do not hold the breath to extend the timer.

Common mistakes and prevention

- Do not lean back to chase knee height or pound the floor as speed rises. Lower knee height or march quickly instead.

Regression and progression

- Lower the pace, resistance, incline or work interval until breathing and movement are coordinated.

- Increase one variable at a time: duration or distance first, then pace or resistance.

Stop signals

- Stop for sharp or increasing pain, numbness, dizziness, chest pain, unusual shortness of breath or loss of control. Stop as well if the route, landing area, grip or machine is no longer secure.