It’s a bowel movement in a bag. First, Gen Z started carrying around “anxiety bags” packed with essentials to calm their frazzled nerves, from fidget spinners to sour candy. But for those that can’t imagine anything more stressful than constipation — or, gasp!, putting a bare behind on a public toilet seat — a “poopmaxxing purse” may be a No. 2 priority. And one woman is going viral for hers, which she says is filled with things that help keep her digestion regular and her tush in tip-top shape. Wellness influencers are promoting “poopmaxxing purses” to better support their high-fiber diets and more toilet trips. @hallysicle/TikTok Hally — who proclaims in her TikTok bio that she wants to “make pooping cozy again” — has made being regular her whole brand, sharing everything from her favorite “poopmaxxing snack platter” to her bathroom “poop setup.” But her “poopmaxxing purse” video has really resonated with digestively-challenged doomscrollers, racking up over a million views.…