Nineteen words are all Kato01 needs to capture a feeling most people have known: being close to tears and understanding that they will have to wait. The poem gives us no scene, no cause, and no listener. There is only a speaker whose body is already complaining and whose feelings have been put on hold.
The central idea is the gap between what we feel and when we are allowed to show it. The title, "Unhealthy Behaviour", sounds like something from a health leaflet or a teacher's comment. The poem itself reads like the opposite of a lecture. It lists the symptoms first, and only in the last line do we learn what the "behaviour" is. Crying is not the unhealthy thing. Holding it back is. The title judges from the outside, and the four lines show what it feels like from the inside.
The construction does much of this work. The first two lines are short and perfectly parallel: "My tummy aches / My throat hurts." Each is a possessive, a body part, and a one-word verb, like a patient reciting symptoms. Counting syllables, the lines run roughly four, three, seven and eight. The two clipped lines give way to two longer ones, and the poem seems to swell as the pressure builds. The last line is the longest, which suits its subject, because waiting is a stretched-out, drawn-out thing. There is no rhyme either. "Aches," "hurts," "crying" and "day" never chime, so no line closes neatly on the one before. A rhyme would give the satisfaction of resolution, and this speaker is denied exactly that.
The lack of punctuation matters too. There are no commas or full stops, so the lines run on as if the speaker is afraid that pausing would let something spill out. Even the end of the poem has no full stop. "Next day" is where the words stop, but nothing is settled, because the tears have only been moved out of the poem and into a future we never see.
The word choices are small but telling. "Tummy" is a soft, childlike word. A more clinical speaker would say "stomach," and the choice makes the pain feel tender and unguarded. Next to it comes "verge," a much more formal word, an edge or border that you stand on before falling. That image turns crying into a physical place, and the speaker is balanced at its brink. The poem never says "I am sad" or "I am scared," and judging by the imagery it doesn't need to. The tummy and the throat do the talking. A lump in the throat is a common way to describe held-back tears, and a stomach that aches is a common sign of anxiety. The body is speaking for a person who has been told, or has told themselves, to keep quiet.
The verb "show" in the last line is also worth noticing. The speaker doesn't say "I can't cry" but "I can't *show*," which suggests the feeling is real and fully present, and what is forbidden is letting anyone see it. Nobody is named as the audience, but the word carries a sense of being watched. "Can't" is stronger than "won't." It sounds like a rule rather than a choice. And "next day," without an article, is blunt and almost telegraphic, a deadline stated flatly and with no comfort attached.
The poem's significance lies in this economy. Nothing in the text tells us who is speaking or why the tears must wait. We have only a username and the words themselves, so the poem has to work alone. That blankness is a strength. Because the situation is left open, readers can fill the gap with their own: a classroom, a workplace, a family dinner, any place where feelings feel inconvenient. The poem asks whether keeping our feelings for a "next day" costs us something in the meantime, and the aching tummy and sore throat suggest that it does. In four short lines, the speaker's silence turns out to be loud.