There is an article on apostrophes in the Knowledge Base that I think you might find helpful. You can read the article here. Basically, plurals do not have apostrophes.
I do wonder what this is. Is it a tagline? A six-word story? If it's the latter, it doesn't work very well since there's no concrete hint of anything greater or more substantial. For instance, Hemingway's famous six-word story, "For sale: Baby shoes. Never used." has strong emotional impact because it directly alludes to a mother who lost her baby, probably due to a miscarriage.
Writing anything with a limited word count is extremely challenging, but it's great practice.
Some people are hourglass shaped, some people are apple shaped, some people are pear shaped, some people are even bean pole shaped, but if we’re not careful we all become banana shaped. This is your gentle posture reminder. — Ranger