Dragonball Z GT Room of Spirit and Time Guide

Usage #1 (Anime Only)
Who: Goku
Why: as part of Kami's training
Length of Time: 10 hours
Benefit: Almost none

Usage #2
Who: Vegeta and Future Trunks
Why: To train to beat the androids and Cell
Length of Time: 25 hours
Benefit: Both fighters transformed into Ascended Super Saiya-jin

Usage #3
Who: Goku and Gohan
Why: To train to beat Cell
Length of Time: 21 hours
Benefit: Goku became an Ascended Super Saiya-jin and Gohan became a Super Saiaya-jin

Usage #4
Who: Piccolo
Why: To train for the Cell Games
Length of Time: 24 hours
Benefit: A substantial amount of strength was gained

Usage #5
Who: Vegeta
Why: To train for the Cell Games
Length of Time: 23 hours
Benefit: Almost none

Usage #6
Who: Future Trunks
Why: To train for the Cell Games
Length of Time: 23 hours
Benefit: Almost none

Usage #7
Who: Goten and Trunks
Why: To train to beat Super Buu
Length of Time: ½ hour
Benefit: Were able to become Super Saiya-jin 3 as Gotenks

Notes
· The Room of Spirit and Time is a tough place to train in because of its dense air, extreme temperature, and gravity 10 times that of Earth.
· This chamber multiplies time by 360, allowing those that are inside to train for about a year in only one day.
· Rules: No more than two people may enter at a time and one person may not train there for longer than 48 hours.
· At one point in the Buu saga, Goten, Trunks, Piccolo, and Buu are all in the room at once, so that is a bit of a plot hole.
· In the Buu saga, Piccolo sealed off the entrance to this chamber, preventing anyone from ever using it again.