Easy for me to say, right? After all, I am a runner, and 98.999% of my runs happen in a non-gym setting (and, most of those runs also happen outdoors, in all kinds of extreme temps and weather conditions).
Granted, I do have a treadmill, but it's no secret that I seldom use it. I don't have a gym membership, nor do I have a viable space in my house for a home gym. I do manage to work out almost every day, though, in some capacity.
I believe if I can find a way to make the workouts happen, anyone else can too.