Board Thread:Warhammer 40k General Discussion/@comment-66.206.224.153-20140125034337/@comment-25451195-20141005081229

66.249.82.58 wrote: Could some one explain how he would servive all those years in the web way (food ,water).

Primarchs are super natural beings, in a non material realm. things are... different... in the warp. In the Warp you are repersented by your mental powers (hence why psykers can do stuff there) and that the Sisters of Silence (all voids) and Imperial Custodes (who are hinted at having similar defense vs deamons as grey knights) can operate in the webway. hence why psykers (many examples of this are in the thousand sons novel)

also with that inquisitor in reference, coming out younger... Time is not a river in the warp, its more like a flood plane in a tropical storm system.