I need to survive for 3 days without pooping, and eating as little as possible. I can pee, but not very often. It can't take up too much space. What food do I pack?

Please don't ask why I need this.

It would be great if the food also made me sweat less.

It has to be something I can easily find.

EDITS FOR CLARIFICATION:

• I am not planning on partaking in any illegal activities.

• I do not condone the use of illegal substances and am not planning on smuggling anything anywhere.

• I am not going on a hiking trip or mailing myself anywhere.

• I will be staying in a tent (not a small one; a huge with with air conditioning and everything). I will be traveling for five days, returning to my current location on day 3 and traveling again on the last two days. I will not poop on the first three days (hopefully).

• Clean toilets with all the expected facilities will be available to me. I am not going to poop for reasons that I wish to keep to myself.

• If it gets bad, like really bad, like a-piece-of-poop-is-literally-halfway-out-my-ass bad, I will use the toilets.

Please stop asking because I am not telling anyone the reason.