Answer:

 It depends, for different patients, the stimulation level of the device is required differently. Some feel the stimulation when intensity indication is only 10, or 11, or 12, but some need to use intensity indication level of 40, or 45, or 50, even 70 to get the feeling.  The key is, to adjust the stimulation intensity to a level that the patient feel a comfortable and strong stimulation. Especially for the beginners, it is recommended that you should always start with a low level of intensity of stimulation. Too strong stimulation to the pelvic floor muscles will cause sore and aches, just like the way we exercise other muscles of our body in everyday life.