My male was doing the same thing...Very active..at night and most of the morning.took him to vet yesterday.mostly because he hasnt fed since late November,and has begun to lose weight.Turns out he has a respitory infection,which will be treated with antibiotics by injection over the next month, he also was very active,watch him ,see if hes resting with his head up alot,and if he is yawning more frequently.both are signs of a respitory infection,also this time of year is mating season....so says the Doc...might be looking for a girlfriend....Good luck