Trampoline beds are great for getting a good workout and predicting the future. Just make sure to keep your head protected from any stray basketballs or flying cats.
Stare into the abyss of your own reflection and predict the exact date and time of the apocalypse. It's a great way to get some solo time with your thoughts.
Find other trampoline bed prophets to share your visions with. You might even start a new cult.