"Mens sana in corpore sano", says 10000th study :) The real question: is there anyone out there that really debates that exercising constantly = better, longer life?
Nobody credible. The real question is how do you get people of their ass and start exercising? This includes me, I feel much better on days I make it to the gym.
Leave your work access card (or some other daily essential) in a locker overnight if they'll let you, so you have to go to the gym in the morning no matter what.
Take pre-workout in a morning or before you leave work so you have too much energy to _not_ go to the gym.
You only need to bootstrap the habit. Then it becomes natural.