Even if you are over 70, there is no reason you can't do simple exercises and this would also be a great workout for those just starting who haven't exercised in a while. She's also using items around the home for those who are still in Corona Virus lockdown.
By the way, those in the Blue Zones (where people live a healthier life well into their 100s) they exercise daily.
I'll add a post tomorrow on Blue Zones.