Dog ownership associated with decreased cardiovascular risk
ahajournals.org
ahajournals.org
I guess randomly assigning dogs to people and measuring their long term health changes was beyond the budget. And tough to make double blind.
Sadly all that experiment would achieve is under excersised dogs.
Please see two evolutionary biologists mentioning some of the relevant points starting at 17:54 here https://youtu.be/CS3w9zOGvmw
I think you got the wrong video! They are talking about if a dog can read expressions from humans with masks.
But it didn't turn into a couple activity. And in both cases I didn't even want to get a dog.
A muscle tear is serious. Muscle soreness is strength building. What doesn't gravely injure you, may often make you stronger.