It's alright for you to go to bed if you're feeling tired. "I'm not tired." "Despite doing nothing but yawn this whole time? If you're tired you should really go to bed and not overdo yourself." "Do you want me to sleep that badly?"
「眠いなら寝ていいんだよ」「まだ眠くないもん」「さっきからあくびばっかりしてるくせに。眠いならほんと無理しないで寝た方がいいよ」「そんなに寝てほしいの？」