Advice for Activities to Avoid during TWW

Jackie • Happily married 35 year old lesbian in Berkeley, CA. After eight IUI's, expecting baby #1 in November!
Hi all, Do you have advice for activities to avoid during the TWW, particularly for <a href="">IUI</a>? I was at a party tonight and people started talking about how you can mess up implantation or cause miscarriage by mowing the lawn or doing activities that vibrate your abdomen/ uterus. Is this really true? Are there things I should be avoiding doing? Thanks for the help!