It is okay but try to not make a habit of it. In the beginning of your meditation practice you may notice how tired you really are. Most of us are sleep deprived and when we sit down to meditate our bodies may drift in and out of sleep. It is optimal to stay awake while meditating to receive the full benefits and results. Although meditation improves sleep quality, it is a good idea to get more sleep if you find yourself drifting off. If it is too challenging to meditate without falling asleep, try meditating with the eyes slightly opened or try one of our guided Breathe and Rest classes.