As you know, vaginal balls are perfect for exercising a woman's vaginal muscles. But before engaging in this practice, make sure you lubricate the balls with a lubricant and comfortably lie down. Then delicately introduce the sex toy into the vagina leaving the cord outside. Thus you provide extra safety and easy removal from the opening.
Now it's a high time to stand up and make the effort to retain the balls in the entry for some instants. Start with one minute, then 2 minutes and increase the duration of their parking up to 15 or even 30 minutes.