Older men tend to have enlarged prostates. One of the side effects is a poor pee stream. The tendency is to use abdominal muscles to push on the bladder to start or increase the pee stream. This is not a good idea as many inguinal hernias get their start this way. Happened to me a few years back and now I will be having surgery next month. Please be careful about pushing with your abdominal muscles to start a pee stream.