How have people found daily Chi Gung practice as a source of energy for daily life?
I do an hour of Level 1 Active Exercise followed immediately by an hour of Small Universe each day, but I don't do any aerobic exercise on a regular basis, and I have been finding myself feeling sleepy and lacking energy quite often. Given that I have also not been sleeping well, should I assume that the tiredness is due to not supplementing Chi Gung with regular physical exercise, or that it is due to lack of sleep and similar factors?
In other words, is doing Chi Gung in itself enough to be healthy and vigorous? If so, how much? (I am a generally healthy 21-year old male)