sleeping
I've only ever seen my rabbit 'sleeping' with her eyes closed after shes had a really good run or exerted herself a lot more than usual lol. The last time she closed her eyes was after she got in a scrap with her neighbour bun lol (nothing serious so no worries, hehe).
My nan also had to look after her the last two days and apparently it took them over 2 hours to catch her when loose in the house (why they didn't ring me when i live 1 min away i dont know) i heard she was sleeping after haha silly buns.
On the other hand ive seen my friends rabbit flat out snoozing quite a bit... shes a very chilled and relaxed character haha