With this mod installed, players will need to defecate. This can be noisy and you'll need some kind of toilet paper, but holding it in too long will only make matters worse. Combine this with the zombie apocalypse and you get some interesting scenarios...
This is a major modpack for build 41. Everything from an abandoned ship to a hunting and food mod can be found here, Snake has a lot of mods and a few maps, but luckily he made an all-in-one pack to combine many of them for easy installation.
Meditation comes with a trait called "Yogi" that gives a +1 bonus to Lightfoot (making yogis move a bit quieter). All of the other effects of this mod are locked to players with this trait by default; however, in sandbox options, you may allow everyone to meditate exactly as yogis do!