Hi Elena @elenagormley, Welcome to Connect. There have been a few members who mentioned shaky hands with PMR but not sure it was after exercising. Here's a search link that shows the comments - https://connect.mayoclinic.org/search/?search=PMR+shaky+hands.

There are also several discussions on low dose naltrexone and PMR that you might want to scan through to learn what others have shared - https://connect.mayoclinic.org/search/?search=LDN+for+PMR.

Has your mom mentioned her shaky hands and legs after light exercise symptoms to her doctor or rheumatologist?