Back pain in teenagers is surprisingly common, affecting roughly one in five high school students each year. The good news is that most cases aren’t caused by anything serious and respond well to simple strategies you can start at home: targeted stretches, posture adjustments, smarter screen habits, and a few changes to daily routines.
Why Teenagers Get Back Pain
The biggest factor is biological. During growth spurts, bones grow faster than the muscles and ligaments attached to them. This mismatch creates tightness, reduced flexibility, and muscle imbalances that pull on the spine in ways it isn’t used to. That’s why back pain often shows up or worsens during puberty, right when teens are growing fastest.
Screen time is the other major driver. A large prospective study of 757 high school students found that spending three or more hours a day on a tablet or phone significantly increased the risk of developing low back pain. Specific postures made it worse: sitting hunched over a tablet more than quadrupled the odds, and lying down while using a phone roughly doubled them. Girls were also about 1.8 times more likely than boys to develop back pain, and mental health struggles nearly tripled the risk, likely because stress and anxiety increase muscle tension throughout the body.
Stretches That Help
A short stretching routine done twice a day, morning and evening, can make a noticeable difference within a couple of weeks. These four stretches target the lower back and the tight hip muscles that often contribute to pain. Do each one 2 to 3 times per session.
- Knee-to-chest stretch. Lie on your back with knees bent and feet flat on the floor. Pull one knee toward your chest with both hands while tightening your stomach muscles and pressing your lower back into the floor. Hold for five seconds, then switch legs. Finish by pulling both knees to your chest at the same time.
- Lower back rotation. From the same starting position, keep your shoulders flat on the floor and slowly roll both bent knees to one side. Hold for 5 to 10 seconds, return to center, then roll to the other side.
- Pelvic tilt. Lying on your back with knees bent, tighten your stomach muscles so your lower back lifts slightly off the floor. Hold for five seconds, relax. Then do the opposite: flatten your back toward the floor by pulling your belly button down. Hold five seconds, relax. Repeat 3 to 5 times.
- Cat-cow stretch. On hands and knees, slowly arch your back upward like a cat, then let your belly drop toward the floor. Move between these two positions slowly, holding each for a few seconds. This loosens the entire spine and is especially helpful first thing in the morning when the back feels stiff.
If any stretch causes sharp or shooting pain, stop. Mild pulling or tension is normal, but pain that gets worse is a signal to back off.
Fix the Screen Setup
Since screen time is one of the strongest predictors of teen back pain, adjusting how your teenager uses devices matters as much as stretching. The goal is to reduce the amount of time the spine spends in a flexed, rounded position.
When using a laptop or tablet at a desk, the top of the screen should sit roughly at eye level. A stack of books or a cheap laptop stand can get it there. Feet should rest flat on the floor with knees at about a 90-degree angle. If the chair is too tall, a footrest or even a box under the desk works. When using a phone, holding it up closer to face level instead of looking down into the lap reduces strain on the neck and upper back considerably.
Lying in bed scrolling through a phone is one of the worst postures for the lower back. If your teen does this regularly, encouraging them to at least prop a pillow behind them to sit semi-upright, or to switch to a desk, can help. Breaking up long screen sessions with a few minutes of standing or walking every 30 to 45 minutes also reduces the cumulative load on the spine.
Check the Backpack
The widely accepted guideline is that a backpack should weigh no more than 10% of the student’s body weight. For a 120-pound teenager, that means 12 pounds max. Multiple national and international health bodies have endorsed this threshold, and some extend it to 13% for older students, but 10% is the safest target.
Weight alone isn’t the whole story. Both straps should be used (slinging it over one shoulder creates asymmetric strain), and the pack should sit snugly against the back rather than hanging low near the hips. If the school allows it, keeping a second set of heavy textbooks in a locker and only carrying what’s needed for that evening’s homework makes a real difference.
Ice, Heat, and Rest
For a new flare-up of back pain, cold therapy is the better starting point. Wrap an ice pack in a thin towel and apply it to the sore area for 15 to 20 minutes at a time. Ice helps reduce inflammation and numbs the area. After the first 48 to 72 hours, switching to heat (a warm towel or heating pad on a low setting) can loosen tight muscles and improve blood flow to the area.
Complete bed rest is not helpful and can actually make back pain worse. Light movement, gentle walking, and the stretches described above are better for recovery than lying still all day. If a teen plays sports, taking a short break from the activity that aggravates the pain is reasonable, but staying generally active speeds healing.
Sleep Matters More Than You Think
Poor sleep and back pain feed each other in a cycle: pain disrupts sleep, and insufficient sleep makes the body more sensitive to pain. Teenagers between 13 and 18 need 8 to 10 hours of sleep per night, yet many fall short. A firm, supportive mattress helps. Sleeping on the back or side with a pillow between the knees keeps the spine in a more neutral alignment than sleeping on the stomach, which forces the lower back into extension for hours.
Keeping the bedroom cool, limiting screens in the hour before bed, and sticking to a consistent sleep schedule all improve sleep quality and, by extension, pain tolerance.
When Back Pain Signals Something Else
Most teen back pain is muscular and resolves within a few weeks with the strategies above. But some patterns warrant a closer look.
Scoliosis, a sideways curvature of the spine, affects some adolescents and often becomes visible during puberty. Signs to watch for include uneven shoulders or hips, one leg that appears longer than the other, and ribs that stick out more on one side when your teen bends forward. School screenings sometimes catch this, but a primary care visit can confirm it.
Teen athletes, especially those in sports involving repeated back extension like gymnastics, football, and diving, are at risk for a stress fracture in the lower spine called spondylolysis. The hallmarks are lower back pain that worsens with activity and improves with rest, tight hamstrings and hip flexors, and sometimes noticeable stiffness when bending or twisting. If your teen’s back pain has lasted more than four to six weeks, wakes them up at night, radiates down a leg, or comes with numbness or tingling, it’s worth getting imaging to rule out a structural problem.
Building Long-Term Habits
The most effective long-term protection against recurring back pain is regular physical activity that strengthens the core, meaning the muscles of the abdomen, lower back, and hips. Swimming, yoga, Pilates, and even basic bodyweight exercises like planks and bridges build the muscular support the spine needs, especially during the years when bones are growing rapidly and flexibility is temporarily reduced.
Teens who sit for long stretches at school and then sit again for homework and screen time accumulate hours of spinal loading every day. Counteracting that with 30 to 60 minutes of movement doesn’t need to be structured exercise. Walking, playing a pickup game, or even just stretching while watching something on a screen counts. The spine is designed to move, and the more varied positions it experiences throughout the day, the less likely any single posture is to cause problems.