Bewertung: 4,9 - 23 RezensionenSnorkeling Mask, the first full-face snorkeling mask in the world allowing you to breathe just as naturally underwater, through the nose and mouth..
I wish I had a secret breathing technique that could add 75% to your breath-hold, but i dont, and dont believe anyone if they say that they do! Freediving training..
A community of researchers interested in breath based diagnostics, jointly designing an open-source breath sampler that can be used with a range of analytical..