Good idea.
In terms of other marginal gains. Been using this now for commuting:
rational: https://respiratory-research.biomedcentral.com/articles/10.1186/1465-9921-11-108
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4595062/
In a randomized, double-blind, placebo-controlled exploratory trial, 35 human subjects suffering from early symptoms of common cold received Iota-Carrageenan (0.12%) in a saline solution three times daily for 4 days, compared to placebo.
@Chalfie started
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Good idea.
In terms of other marginal gains. Been using this now for commuting:
rational:
https://respiratory-research.biomedcentral.com/articles/10.1186/1465-9921-11-108
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4595062/