I have a difficult time staying awake when I meditate! Location, time of day, physical position do not seem to impact this. After I am able to stop thinking, I am aware of a short time of silence, then I vision (or is it dreaming), then I start to nod off. I feel a strong desire to nap. Sometimes I indulge this desire, sometimes I force myself into wakefulness. I enjoy sleeping, going to bed around 10, falling asleep right away, awaking once or twice during the night but falling right back into sleep, and awaking between 5 and 6 each morning. I’m generally alert and not tired during the day. Any insights or recommendations?