(walking to school must be a lot more health than taking a bus)这句话是否有语法错误?

问题描述:

(walking to school must be a lot more health than taking a bus)这句话是否有语法错误?

用形容词healthy

a lot more health错
应该是
walking to school must be much more healthier than taking a bus

句中a lot more health有错 ,正确的是:
Walking to school must be much healthier than taking a bus.