Are you doing crunches but your neck is strained? Abdominal exercises
This means your upper shoulder girdle is taking all the strain, and your abdominal muscles aren't working properly. You could also injure your cervical spine, and instead of a flat head, you could end up with a dowager's hump. Watch the test and analysis of abdominal exercises in this video.
Will you share your results?
My course for working on posture: First Steps in Smart Fitness https://sabintag.ru/first-smart?utm_s...