In reply to FactorXXX:
The 7th Dimension of course:
The Seventh Dimension is an inter-dimensional reality that exists outside of the normally accepted space/time continuum.
Different laws of physics prevent a person normally moving into that place. The time also flows differently here: each 1 hour spent in the Seventh Dimension is equivalent to 1 minute in our world.
Obviously, Matt had to enter the 7D to give him enough time to recover between each hard sequence.