2 Spirit and time rooms are as follows:
Both are in Kami's Lookout and 1 day in them is equal to 1 year of training.
1.This one takes you to another place or "time".Used in the "Saiyan Saga" to prepare for the coming of Vegeta and his henchmen..used by Tien, Yamcha,Chaozu.They face two old Siyans in there and get crushed.
2.This one isolates you from everything else and only two people are allowed at a time.1 year in the room=1 day in the real world.The Gravity is much more than on earth.Used in the Android Saga to prepare for the coming of cell/androids.People that go in it are..Vegeta, Trunks,Gohan,Goku,and Piccolo.You are only allowed in this room twice in your whole life.