It's embarrassing as a child and you can't do something everybody else can. That was the way with me when it came to sitting up straight. I didn't know it then, but I had a problem with spinal alignment. My neck was not curved the way most are but ramrod straight.
This meant I could not hold my head up without becoming fatigued. It also meant that my head would droop down to my chest whenever I did my schoolwork so I had to prop my head up with my hand. Teachers did not like this.
My spine was twisted and crooked so I had all sorts of problem with doing things other kids could do. I had heard of chiropractors but so many people totally pooh-poohed them that I didn't press my mother to take me to one. I dropped out of gym as soon as I could.
I became a gardener in Vancouver and because of my spinal problem, I injured myself again and had to give it up. Years went by with pain, inability to walk occasionally and all sorts of times when I couldn't work.
In the 1990's, it got so bad that I had one constant, horrible headache that kept me from sleeping and going out for the most part, but on one time I did go out, I passed a chiropractor's office. He had a sign out. Free x-rays. What could it hurt? So I got my free x-rays and when I saw them, I suddenly felt better about all the fatigue and pain and embarrassment I'd suffered. The explanation for it all was right there.
After one treatment, the headaches stopped, the tension dropped away. My pelvis had also been stuck. I had to go three times a week but now I only go once every month. My neck is now curved again and every headache is solved by a trip to the chiropractor.
One more story: my chiropractor was brought a two-week old baby who would not stop crying. He made one simple adjustment and Presto! the baby stopped crying and hasn't cried since, I'm told.
So, I'm not really trying to sell you on chiropractors but if you have a problem with posture or fatigue or a grouchy baby, you might do well to check it out with one. It can literally give you a new release on life.