Jumping jacks, pushups, situps, lunges, planks, wall-sits, squats . . . all can be done virtually silently and in your own home, while your D sleeps. Go Beast Mode.
Add in 8-count body builders, burpees, etc. The amount is limitless as long as your mind isn't.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.