還是lose weights，lose weight

是lose weights意思是減重

By lifting heavy weights， you are sending a signal to your body that you want to preserve your muscle mass， and that you only want to lose fat， not muscle. 

透過舉起重物，你在向自己的身體發送一個信號：你想保持身體的肌肉，你只是想減掉脂肪而不是減掉