We need to stay a hesathy balanced diet.这个句子有没有错?

We need to keep a healthy/balanced diet.你们只用告诉我是对的还是错的！！！错的，很显然哪里错？healthy拼错了，没有hesathy这个单词另外， keep a healthy/balanced diet 保持健康均衡的饮食， 动词要用keep，不可用stay``````````stay和keep不一样啊有时可以通用，但我们一般说 keep a healthy/balanced diet