The 'Tunnel' (reverse-hinge acro-skill)
Ground-acrobatic skills
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57s
THE WHAT :
The 'Tunnel' is a ground acrobatic skill within the reverse-hinge family, built around a bilateral reverse-hinge entry and exit with a central supported pass-through under the body. The practitioner reaches forward into the floor and establishes a tripod-style hand support (fingertips engaged, commonly seen in breakdance contexts) to create space through the arms, allowing the body to travel underneath and through the structure.
The main focus is developing control of full-body extension-to-flexion transitions through a continuous reverse-hinge pathway. The movement connects a long, extended entry line into a deeply compressed pass-through phase, and then re-expands back into a standing position through a controlled bilateral reverse-hinge. This builds coordination in sequencing force from the ground upward through the entire body.
THE HOW:
A key requirement is maintaining a clean reverse-hinge chain where the extension resolves progressively from the feet through the spine and only completes at the crown of the head. A common error is allowing the head to initiate or collapse early - instead, the head must be the last point to arrive, preserving the integrity of the sequential unfolding back to standing.
On entry, the body creates a long reaching line through the back leg and spine as the hands connect to the floor, producing a stretched, continuous shape before compressing under the support of the arms. This transition between full extension and deep flexion is central to the quality of the movement, requiring both reach and controlled folding to pass smoothly through the tunnel phase.
Execution should prioritise a clear, elongated entry line, controlled weight transfer into the hands, smooth passage underneath the body, and a disciplined reverse-hinge exit where the body re-stacks from feet to crown without interruption or collapse in sequencing.
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