Being told you have a prolapse and then quietly giving up exercise is one of the more common — and more avoidable — outcomes in pelvic health. For most women the answer is not to stop, but to change how they load.
The mechanism is pressure. Every time abdominal pressure rises, it pushes down onto the pelvic floor. Lifting itself is not the problem; lifting while holding your breath and bracing hard is, because that traps pressure and drives it downward with nowhere else to go.
What usually helps: exhale on the effort rather than holding your breath. Engage the pelvic floor just before the heaviest part of the movement, not after it. Reduce the load and increase the repetitions rather than abandoning the lift. Be cautious with movements that combine maximal load with a bearing-down pattern — very heavy squats and deadlifts near your limit are the usual culprits.
High-impact work sits on a spectrum rather than a yes-or-no line. Running and jumping raise pressure repeatedly, but plenty of women with mild prolapse continue both without their symptoms worsening. The practical test is what you feel afterwards: increased heaviness or dragging by the end of the day suggests the load was too much for now, not forever.
Strengthening the pelvic floor properly makes all of this easier, and technique matters far more than repetitions. Squeezing while bracing the abdomen or holding the breath achieves very little.
See a doctor if exercise reliably worsens a feeling of heaviness, if you notice a bulge during or after training, if you leak with lifting, or if you have been avoiding activity you would rather be doing — that last one is a reason to be assessed, not a reason to accept it.