Answer:
What contains zero calories, but if you consume it, you will probably gain weight?
I can travel from there to here by disappearing, and here to there by reappearing.
What can you catch but not throw?
What can be underwater, under fire, on fire and taking water all at the same time?
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
What is so fragile that saying its name breaks it?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?