Studies like this one (http://www.ncbi.nlm.nih.gov/pubmed/10648452) indicate that it could be helpful by relaxing the LES. However, I did not find it particuarly helpful when I took it.
Friction is important for all sports.
Without it it becomes really hard to accelerate or deaccelerate.
For example a 100m sprinter.
It would be great for him if there wasnt any air resistance...
Achalasia is a disorder of the esophagus that prevents normal swallowing.
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