what would you do? Who would you bring with you? (1 person)
1 day in the real world = 1 year in the Chamber
1 minute in the real world = 6 hours in the Chamber
It's been said that you can only enter 2 times. The 3rd time you go in, the door will close on you and you will be forever trapped. Food is provided, but only enough for 2. That's what it says on the wiki.
For me, I'd just do whatever the hell I want. Maybe work out a bit and all, some doujins, you know.
Bring girl of my dreams; get a physical workout by having wild sex part with her on the first go through. Then bring some genius on the second run through and learn all I could.
It doesn't make you last longer, it just means that if you finish in 5 minutes in there, it was really like 10 seconds in the real world. Congrats bro.