One of the ten major Thai Sen
or energy lines.
This one is actually two lines (a and b)
a starts at the navel, descends through the urethra (Sen Sikhini)
b starts at the navel, descends through the colon ending at the anus (Sen Sukhumang)
hernia, frequent urination, female infertility, impotence, premature ejaculation, irregular menstration, uterine bleeding, urinary retention, diarrhoea