我爷爷年纪大了，但是身体还可以。

Wǒ yéye niánjì dà le, dànshì shēntǐ hái kěyǐ.

My grandpa is old, but his health is still okay.

我想多运动，让身体更健康。

Wǒ xiǎng duō yùndòng, ràng shēntǐ gèng jiànkāng.

I want to exercise more to make my body healthier.

你身体好吗？

Nǐ shēntǐ hǎo ma?

How is your health?