It’s kinda the same way you can fall out of a tree and then go play soccer as a kid but have a stiff neck for a week from having a bad pillow as an adult. Our bodies r simply deteriorating 🤷♀️ but stretch marks aren’t a bad thing, and a lot of us actually did get them throughout childhood lmao. They also fade over time. Don’t waste time worrying abt them, just live life 🫶