I take a boot camp/functional fitness training class twice a week. Otherwise, I'm outside.
In the dead of winter, I might take a spin class or go to yoga class. I decide between spin class or my own bike on the trainer at home by the needs of my schedule. I also have a treadmill at home, so no need for the gym there. I'm also outside most of the time in the winter, whether it's snow shoeing, nordic skiing, or running.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport