The quality of your sleep is more important than the amount.
How well you sleep is more important than the length of your sleep.
ーThe quality of your sleep is more important than the amount.
「睡眠の質は量よりもっと大事だ」
the quality of one's sleep で「睡眠の質」
the amount (of one's sleep) で「(睡眠の)量」
ーHow well you sleep is more important than the length of your sleep.
「どのくらい良く眠るかは、睡眠の量より大事だ」
how well you sleep で「どのくらい良く眠るか」=「睡眠の質」
the length of one's sleep で「睡眠の長さ・量」
ご参考まで!
How well you sleep is more important than how long you sleep.
こんにちは。
様々な言い方ができると思いますが、例えば以下のような英語表現はいかがでしょうか:
How well you sleep is more important than how long you sleep.
睡眠は量よりも質が大事です。
how well you sleep で「睡眠の質」、how long you sleep で「睡眠の量」と言えます。
ぜひ参考にしてください。