Pick a time. Sit down fully clothed. Let the chair do the work.

Most women are told to "just do your Kegels". The problem is doing them correctly, consistently, for long enough to matter. Most people give up long before anything changes, and plenty are squeezing the wrong muscles the whole time.

The chair doesn't rely on you getting it right. You sit down fully clothed, and it contracts the pelvic floor for you, thousands of times, in half an hour. No effort, no technique to learn, nothing to keep up at home.