Dragonball : Training in Hyperbolic Time Chamber Is it possible?

Well after i made my research, i have discovered some neat stuff about this. and before you asked, no i have not watched the entire dragonball francise yet because it's too damn long -_-, i liked it as my childhood anime though :3. well but we're not here to talk about that.we're here to talk about if training in a hyperbolic time chamber is possible?.well ...