lose weight 

减肥

(jiǎnféi)

A: The Spring Festival has passed. I am going to start losing weight.

春节已经过去了,我要开始减肥了。

(chūnjié yǐjīnɡ ɡuòqù le,wǒ yào kāishǐ jiǎnféi le.)

B: I ate a lot during the holiday so I have put on weight. I need to lose some too. 

过节期间我也吃了很多,估计现在胖了,我也要开始减肥了。

(ɡuòjié qījiān wǒ yě chī le hěnduō,ɡūjì xiànzài pànɡ le,wǒ yě yào kāishǐ jiǎnféi le.)

A: Then we can practise yoga on Saturady. 

那我们周六去练瑜伽。

(nà wǒmen zhōuliù qù liàn yújiā.)