Correct

身子骨儿

/ shēnzigǔr / 
Strokes

Example

As a Noun

one's health; physique

1
Yéye
爷爷
de
的
shēnzigǔr  
身子骨儿
hái
还
tǐng
挺
jiēshí
结实
  
。

Grandpa is still enjoying good health.