Translation of "Overexert" in Japanese

Don't overexert yourself.

無理しないでね。

- Try to avoid overdoing it.
- Don't overexert yourself.
- Don't try too hard.

無理しないでね。

- Your fever has only just come down so don't overexert yourself.
- You've only just gotten over your fever so don't overdo it.

まだ熱が下がったばかりなんだから、無理してはダメだよ。