When men wake up in the morning to pee, if the foam is large or of different sizes and lasts for a short time, this is due to the sugar contained in the urine, which makes the urine more tense and is a normal rushing up of foam, no need to be nervous. However, if you feel a layer of tiny bubbles floating on the surface of the urine, and it does not dissipate for a long time, it may be an early symptom of nephritis or suggest that men suffer from prostatitis. Experts point out that this small bubble is caused due to more protein in the urine. The most early change of nephritis is the appearance of protein in the urine, when there are often no other symptoms yet. If you don’t get active and effective treatment, nephritis develops further and problems like renal insufficiency appear. In addition, if a man has prostatitis, he may carry prostate fluid in his urine, so that there are oil beads on the surface of the urine, which will also show a state of many small bubbles and bubble urine.