I was doing a stretchy band exercise tape...it is done in a chair, seated. I found this video on Amazon.

I'm slowly venturing out doing more...but have been very inconsistent due to health issues.

The tape, seated, worked lots of muscles...I'm sorry, I don't recall the name.

I agree, a good diet can go along way toward improving health. Simple walks are of great benefit too. I think diet is paramount. Be well.