More than half of British adults have had back or neck pain after using their phones or computers, a survey found.
Many people know all too well that sitting at a desk all day hunched over a computer can leave you with aches and pains.
But the research showed smartphones and tablets can also cause problems - a less well-known phenomenon.
Young people aged 16-24 were more likely than any other age group to report back or neck pain after using their phones, perhaps because of more regular use.
The British Chiropractic Association (BCA) is calling for tech firms to make their devices 鈥減osture-friendly鈥?- and also has this advice to be pain-free:
Mind your posture
This one sounds simple but is easy to forget - be aware of your posture. Don鈥檛 hunch over a small screen, and try to avoid being in the same position for more than 40 minutes.
Stretch when you have a free minute
If you are using your phone or tablet while sat down somewhere, change your position a few times, and shrug your shoulders and move your fingers around to keep them relaxed.
Keep your head up
We often forget our heads are fairly heavy - so sitting with it out in front of your body can put a strain on your neck and back.
It is best to try to sit with your head directly over your body.
Be at the right height for your computer
If using a computer or laptop, your eyes should be level with the top of the computer screen.
You might need to put it on a stand or book, and it is worth sitting in a chair that provides full support for your spine.
The BCA says your knees, hips and shoulders should face the same direction, with your feet flat on the ground.
Think through how you will use a new device
It is worth thinking about your posture when you buy something - is one device likely to be easier to use in a more comfortable position, or should you get any accessories?
Get the right bag
If you carry a laptop or tablet, use a rucksack rather than a handbag or satchel so the weight is distributed across both shoulders, and adjust the straps so it is held close to your back.
Think about your posture when you do other things
The way you use your phone may not be the only thing causing back pain, of course.
It is worth thinking about how you lift and carry things, sleep, sit, stand, drive, do DIY and much else besides.
See the BCA website for more advice on how to have a good posture in many situations.