An aerobic mouthguard having a plurality of treads intermittent to one of a plurality of recesses forming an oral footprint and or an opposite oral footprint for larger oral shock diffusion and larger oral osmotic equilibrium. Each oral footprint may comprise a plurality of ducts and v-cuts that taper toward their posterior end for retaining larger oral fluids. The aerobic mouthguard can comprise a single rigid footprint for stress related contact sports or a double elastic footprint for stress-free dental therapy and treatment. A tab defining a lip footprint can be forwardly part of the aerobic mouthguard, and a tether or a drool cup having one or more drool pads can be forwardly part of the tab for larger oral osmotic equilibrium to prevent tooth loss.