With Kami's consent, he led He-El to the door of the Hyperbolic Time Chamber and reminded him, "You can only enter for two days. Two days outside equals two years inside. The Hyperbolic Time Chamber places immense mental and physical pressure on those within. If you cannot endure it, come out immediately." Kami leaned on his wooden staff as his aged body gave the reminder. Though the Hyperbolic Time Chamber seemed immensely convenient, granting two years inside for just two days outside and giving one much more time to train.