North players know, sessions with specialist tackling coach John Donehue are not for the faint-hearted.

The most recent example was described by one player as ‘brutal’ and NMFC.com.au's cameras were there to capture it.

After completing a gruelling two-hour skills and conditioning session, Donehue stepped in and increased the level of intensity significantly over the course of a further 60-minutes.

An international Jiu Jitsu champion and black belt, Donehue’s approach to training is unparalleled and unforgiving – just watch the video and see for yourself.

PRESS PLAY above to watch the tackling feature | YouTube

For more information about John Donehue, visit johndonehue.com