Answer from Dr Merkl:
In addition to localised circulatory disorders of the auditory organ, stress factors, an unfavourable interplay between the upper and lower jaw and cervical spine disorders are considered to be the cause of ringing in the ears, medically known as "tinnitus". The junction between the head and cervical spine is regarded as the key point for many ENT symptoms. Malfunctions in the joint connections between the head and cervical spine cause incorrect signals to be sent to central control centres via different muscle tensions. Riding a racing bike in even a moderately aerodynamic position causes the head to tilt backwards in addition to the hunched back. If the position is held for a long time, functional disorders can occur. Despite warnings against chiropractic treatment, I consider the "straightening" of the head-neck transition to be one of the key disciplines of chiropractic. As a preventive measure, you should largely avoid the aerodynamic posture and adopt as upright a posture as possible.