Language Point 43

Physical fitness and healthy lifestyles have changed from fashion and hobby for a few to official policy for many businesses and governments. (Para. 33)

Meaning: In the past physical fitness and healthy lifestyles meant fashion and hobby to a few people, but now to many businesses and governments they have become principles for making official decisions.

change from: change (something or someone) from (a state) to another

The beggar was changed from a prince.

这乞丐原来是个王子。

Cf. change into: cause (something or someone)to become (something or someone else) 变成

The prince was changed into a beggar.

王子变成了乞丐。

policy: n. a set of ideas or principles that is used as a foundation for making decisions 政策

One of the new government's policies is to control public spending.

新政府的政策之一是控制公益开支。