Whis Dimension

Whis' dimension is a pocket dimension with a hazy atmosphere full of godly ki. Because of its abundance of godly ki, it has immense pressure and hard to move physically. The time in the dimension flows similarly to Room of Spirit and Time. Whis teleported Son Gokū and Vegeta to the dimension to train so that they could stronger in short period. After Vegeta and Goku learned how to control their ki without leaking, they were able to move and train in the dimension.