I usually do T'ai Chi when everyone else has gone to sleep. Not really because I'm bashful about it, although I am, but because I do it when I slow down enough to remember that it's there to do. - I think of it as sparring with one's Chi; Pull the Energy in, push it back out: Pretend that your ****** actions are as breaths for a larger Godself-energy, or Chi, and the universal sustaining Energy being breathed is Tao (For lack of better terms, hah!)
Visualization makes the Energy more real in the Mind and who's to say it can't follow elsewhere?