It is not a strange ? to ask. For me, I feel I should zap at least every other day and very few times on a daily basis. The trouble with this, is fitting it in the time and convenience factor. I find it difficult working out when it is the best time to zap. I am not keen late at night, although I started off that way in the beginning but I woke up with headaches. For the mornings I am too sleepy to start zapping. There's also the food and drink to think about. When zapping you are supposed to leave a gap of 2 hrs of no eating before zapping and again leave it for a further 6 hrs after zapping before eating.