There is no scientific evidence that a "navel disbalance" causes constipation, gastritis or gas. These symptoms are more commonly related to digestive issues, dietary habits, stress or reduced bowel motility. Since you are also experiencing low energy and lightheadedness, a proper medical evaluation is advisable. As a physiotherapist, I recommend maintaining good hydration, a high-fibre diet, regular walking and learning correct breathing and core activation techniques during weight training to avoid excessive abdominal strain.
Next Steps
Consult a Gastroenterologist for evaluation. If your gym technique or lifting posture is contributing to abdominal or back strain, consult a Physiotherapist for assessment and guidance on proper lifting mechanics and core training.
Health Tips
Avoid self-diagnosing "navel displacement." Seek medical attention urgently if you develop severe abdominal pain, persistent vomiting, blood in stools, unexplained weight loss or worsening dizziness.