I’m taking a mindfulness meditation class.
I find that i’m so mindful, I doze off by the end of the 20 minutes of class practice. So far, I’ve not gone “Wah what?” when the instructor rings the gong that says meditation is over, but it’s been close.
Meditation? Nap? refreshing, either way.
Are you doing eyes open or eyes closed?
It is hard not to fall asleep sometimes, but the important thing is to always come back to your breath (or whatever your supposed to be mindful of).
Not sure if you are being serious about it being like a nap, but they should be different. It’s ok if your thoughts wander - everyone’s does. But you should bring them back to being mindful of your breathing. You don’t need to do that when napping 
This is really common with things like yoga and alexander technique (I’ve never done mindfulness meditation).
You are teaching your body to relax, and your body associates relaxation with sleep. The whole point of what you are doing is to teach your body relaxation while keeping your mind awake.
It’s really interesting to observe a beginners’ class of relaxation yoga: there are people who will fall asleep the minute they manage to relax their facial muscles. Relaxing your facial muscles can be very difficult the first time, we are so trained to keep them working all the time. Relaxing them can be associated with sleep so strongly, that when you do it you immediately drop off. It’s a sort of muscle memory really.
So you’re doing it right, to begin with. You’re getting the relaxation part. Now you need to work on keeping the mind alert. It’s worth it, keep going!
I’ve been doing that since I got old. Class? We don’t need no steekin’ class! I can’t
eat more than the minimum for lunch or they’ll catch me napping…ummmm I mean meditating by 2:00 pm 
I’ve done a fair amount of meditation work, and there’s definitely a difference between a deep meditation and falling asleep, although, it can be easy to fall asleep from meditation. At least for me, I’d use an analogy of an old tube TV. Falling asleep would be like turning it off and back on and it takes time for it to warm up and the image and sound to come on. With meditation, it’s more like turning it to a channel with no sound and no image (or, perhaps, less sound and less defined, depending on the depth), so all you need to do to watch something is change the channel. That is, if I’ve been asleep, there’s usually those few seconds of my brain assessing where I am and figuring out what’s going on, but if I’ve just been in a deep meditation, I never really lost my awareness, I was just ignoring it.
That said, being in a deep meditation can often be like waking up from a dream and it can sometimes be difficult to remember specific things. In my own experience though, with dreams it’s much more like a handful of sand where I have some concept and it quickly gets less and less clear, but from meditation, I’ll generally either remember it all or remember nothing, depending on what I’m doing in the meditation.
Either way, with more practice, the distinction will become more clear.
Does it matter?
Not at all. Which is why she didn’t create a thread about it.
Falling asleep during Alexander Technique? Really? OK, sometimes I got really really relaxed, but that happens during normal massages too.
Yup, really. For some people relaxing certain muscles just makes them fall asleep. It’s probably useful, if you want to fall asleep 
I can hover on the edge of sleep for quite awhile-sometimes I’ll drift into the full-blown version; I can tell the difference because I often do this while listening to music-if I can remember the song(s) that have played, then I never was fully out of it.
The three raisins didn’t really do much for me, either. Maybe I’m just not a meditative person.
Eyes closed. Too distracting with them open.
It depends on the time of day; if I do it early in the morning or afternoon, it doesn’t feel like a nap, but in the evening, very much so.
But in the morning or afternoon, it feels very deep when the gong on the tape goes; I really have to work at coming out of it, even though I’ve not been sleeping. Don’t really know how to describe it.
I used to meditate in the evenings, and it put me out like a light. I was having trouble sleeping, though, and while everyone said you’re not supposed to go to sleep from meditating, I thought it was great. I still use relaxation techniques and mindful breathing when I’m having trouble sleeping, and it still puts me out. I might not be enlightened, but I am sleeping.
I don’t meditate. But I do sit in the sun and lazily watch the trees move in the wind, the insects buzz around the garden, and the shadows move across the lawn.
Sounds suspiciously like meditations that I do. When I wake in the morning I lay for a while and listen to the world, mostly it’s the noisy birds really, but it is a few minutes of meditation. I meditate while walking and am mindful of the warmth of the sun, the cool of the breeze and the feel of my feet on the ground.
Meditation is really just a process for allowing what is and being with that rather than listening to the radio station in your head.