Kefir grains, a symbiotic culture of bacteria and yeasts. Traditional kefir is fermented at ambient temperatures, generally overnight. Fermentation of the lactose yields a sour, carbonated, slightly alcoholic beverage, with a consistency and taste similar to thin yogurt.
Aim: glans expansion. technique: urethral dilatation. I purchased a set of urethral sounds made from surgical quality stainless steel, with the following dimensions: 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38 F (1 F = 3 mm). I have been training for months approximately 1 hour once a week with sounds of successive dimensions and am now able to insert the biggest sound.
The wall of the urethra usually coapted at rest. Diameter of urethra can be measured during micturation, which is as following; Prostatic urethra 10-12mm. Membranous urethra 6-8mm. Spongy urethra 8-10mm. Narrowest part of urethra is external urethral meatus, which is a 6mm long vertical slit.