BtW., that's a standard occupational injury among race cyclists. If you live in a warm region and ride a bicycle in the summer, then avoid warm/tight pants, and get a seat that's enough perforated in the middle or perforate it by hand.
There are even homeopatic blends available, for example from the German manufacturer Reckeweg.
In yoga, rocking from side to side while sitting with knees bent and soles put together ("butterfly") increases blood circulation to speed up recovery.