Translations:Uberman/9/en
From Polyphasic Sleep Wiki
Living on this schedule requires constant maintainence of a delicate balance between REM and SWS pressures. Throughout each waking block, REM and SWS pressures build up gradually to very high levels and drops to more withstandable levels during the course of a nap, which would primarily contain the sleep type with higher pressure. Then, this reverses the ratio between REM and SWS pressures, so that the other sleep type dominates the following nap. It is also likely to experience mixed-stage naps that resemble mini-cycles, with both REM and SWS in the body’s effort to mitigate high sleep pressure.