Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Has anyone slept with these and do they hold up?
Document: the earclips hold well, the main problem I had was the music is not clear and the bass is horrible.
The ear piece does not fit snug around the ear. Definitely will not hold in place, if used while exercising.
They fit comfortably into the ears and hold themselves in place very well.The sound quality is acceptable, though I personally believe that it's nothing to really write home about.
I don't know why people are giving crap about this headphones, for the price they are great, they hold great, music quality is awesome and they even block outside noise to a good degree.
I like the over the earhead sets best because they are unmatched for staying in place. The JVC's do tend to be a fair bit tinny/real light in the bass department. We'll see how they hold up over time.
I don't expect much from earbud-style headphones, but these lack any low-frequency response, sounding very "tinny." The clips were also too soft and flexible to hold the earbuds securely in place, if they did not already fit snugly in your ears.
Alright so I've had the iphone earphones and they wouldnt hold well while working out. And quality was all that. I got these today and took them to the gym with me. I was amazed by the sound quality this provided. The bass was phenomenal! and not only that they dont fall off anymore like how the iphone earphones were. Very happy with it! Highly suggestible!
Want to know how these headphones sounds ... its simple anyone can do this without purchasing.1. Take your laptop (preferably with speakers) and place gently next door2. Start your music in low/medium volume3. Go back to your room and enjoy your musicIf you don't have a tiny chainsaw opening the package will be impossible... Sound is very tiny and dont bother with volume or your ears will bleed.Verdict ... keep looking ...
After trying earbuds for years, over 20, I finally found a pair that work for me.Sound is a bit strong on the high end (vs mid and bass balance) but this is easily adjusted in iTunes with the equalizer adjustment.Love the light feel and the fact they won't fall out running, cycling, 4-wheeling or just working on DIY projects around the cabin.The variety of earcaps make for a perfect fit for anyone.
These headphones are a very good value. They sound great, are comfortable, and stay put.They come with different size ear cushions.They fit "in the ear" and have solid bass. They do a good job of blocking external sound and have a good, overall well-rounded solid sound. They are slightly weak on the very high end definition, but not too bad.I recommend these for anyone who needs great over the ear, sound blocking headphones at a fair price.
Answer: I'm not sure of why you would want to sleep with these on?.... but I can say they are great for the gym if you running on the treadmill or any other high pace exericise or movement. before I started using these, I was using the (white in color) ones that come with the phone.  I notice two, things I didn't like.... first, when the cord moves when you are exericising, I can hear the movement..... second, the bud ear piece was not sound proof and you can hear things around you (people talking, exerice machines, etc.) and the bud piece hurts my ear... so I got the JVC Sport Clip and they are much better... !!! jmo.....