Yes they should be. It is proven that ecercise keeps us healthy, feeling good and gives us more energy. Finding a machine that will target the areas you need help in or that will enable you and your body to work with out pain.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.