18 Everyday Habits People Didn’t Realize Would Change Their Bodies Forever

It’s wild how the little things we do every day can leave a lasting mark on our bodies, often in ways we never saw coming.

From seemingly harmless habits to choices made in the name of convenience or fun, these stories shared on Reddit reveal how certain behaviors had surprising and sometimes permanent effects.

Whether it’s a posture adjustment gone wrong, a skincare shortcut, or simply not getting enough sleep, these anecdotes are a reminder that our bodies are keeping score, even when we’re not paying attention.

If you’ve ever wondered whether your daily routine might be leaving a long-term impression, this list will have you thinking twice about the choices we all make without a second thought.

Dive into these stories and see how the smallest habits can lead to some pretty big changes—and maybe even spot a few familiar patterns along the way.

1.

A football player in a green uniform on the field
Photo by Makai Conner on Unsplash

“I was a college athlete. We were told that pain was temporary, but pride was forever. I’ve had three orthopedic surgeries, one of which wasn’t successful and from which I went septic. I was diagnosed with arthritis before I was 20. My knees are shot. I have more cracks, pops, and stiffness than people 10+ years older than me. As it turns out, the pain is forever and comes with compounding interest.”

2.

“Acne. I thought it was something that would go away after your teens, but it’s still destroying my face a decade later, and nothing seems to work. It’s most likely genetic since the other women in my family still suffer from it. Even if there was a cure, I still have the permanent scarring since dark skin tends to scar worse than light skin.”

3.

“Listening to music WAY too loud with headphones on when younger. It definitely leads to hearing loss and hearing aids.”

4.

“Obstructive sleep apnea. When you already know you have some mental troubles, you think that explains your drowsiness and low mood and don’t look for more issues. It does not only hurt your cardiovascular system; it may slowly destroy your life. If you snore at night and/or feel sleepy all day, go see your doctor.”

5.

blue and white round ball
Photo by philippe spitalier on Unsplash

“I had breast implants removed after decades. It left a slightly concave space because, over time, the ribs get deformed from the pressure of the implants.”

6.

“Not getting enough sleep.”

7.

“Bad posture, rounding shoulders to minimize my chest. Now I have neck pain, shoulder pain, and lower back pain, ugh.”

8.

“Pregnancy. I had twins. I got HUGE in the tummy. I had the babies, and it left this belly that wouldn’t go away. Fast forward; the twins are 8 years old. I am 7 weeks post-op of having my diastasis recti corrected. Do you know that center line down the abs? Mine had split. There was a 6 to 8-inch gap down the middle THE WHOLE WAY DOWN. The belly that I kept punishing myself for, the baby fat I couldn’t lose? Those were my organs. My digestive organs were all herniated.”

9.

“Waxing my eyebrows to the same thin shape for 20 years.”

10.

four women talking to each other holding clear drinking glasses while standing near wall with graffiti during daytime
Photo by Elevate on Unsplash

“Casual drinking. I’m 7 months pregnant, and it’s amazing how much weight I’ve lost and how drastically different my face looks in pictures. I’m not going back to drinking after giving birth.”

11.

“Wearing tight shoes every day gave me bunions, but I didn’t realize the cause until years later.”

12.

“A few years of Crossfit have left me with permanent knee and shoulder pain. Heavy weights shouldn’t be lifted for time; your form inevitably goes to hell, and you set yourself up for joint injuries.”

13.

“Being kept 100% out of the sun as a kid. I wasn’t given vitamin D supplements either, so my bones are pretty fragile and break easily, and my enamel is delicate and shears off if my teeth close too hard. My body never sequestered calcium properly as a kid, and I can do nothing about it as an adult. My mom thought she was protecting me from skin cancer, but she was really dooming me to a life of bone fractures and bad teeth.”

14.

“My parents had the kids do a lot of manual labor, starting when I was only 5 or 6. It was not just helping in the yard but doing actual landscaping work. My brother and I once had to haul rocks in those 10lbs buckets from a dumpster to the egress windows 300 yards away. Being so little, we had no idea about posture, lifting with your legs, etc. We both have chronic back, shoulder, knee, and neck pain and have the beginning symptoms of arthritis. We’re only 21 and 26 now. Makes me mad that I hurt myself when I was so little, doing work that the adults should have been doing.”

15.

man in gray crew neck shirt covering his face with his hand
Photo by Nathan Dumlao on Unsplash

“Burn out. I was so afraid of losing everything that I stretched myself to my actual collapse. Five years later, I can still feel the damage my brain sustained from that period of my life, and I still lost everything and had to start over. If I could give any advice to people out there — if you are burning out with no projected relief in sight, do yourself a favor and know when to cut your losses so you can use your time and energy restrategizing.”

16.

“Smoking for almost 10 years. Obviously, I knew that smoking was never going to do anything but hurt my lungs. But it’s been almost two years since I smoked, and I still have terrible lung capacity. Another is not learning healthy exercising habits when I was younger. I wish my parents made me play sports even if I hated it. I think that’s another part of why I get so easily winded and fatigued when trying to work out now. It’s hard for me to breathe while also focusing on moving my body correctly. For example, I subconsciously hold my breath when I do planks or hold a stretch.”

17.

“Working at night hours alters the internal sleeping cycle. If your body gets used to it, you gain a passive energy boost at night and the opposite during day hours, even if you have regular sleep patterns.”

18.

person holding brown and black round ornament
Photo by Kateryna Hliznitsova on Unsplash

“Psychiatric drugs. It’s terrible how easily they are prescribed and how doctors do not explain side effects.”

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Alex Buscemi

Alex Buscemi

Writer. Billionaire. Astronaut. Compulsive liar.

@whatsupboosh on socials.