throw exponents

"Exponents of yoga are thrown off balance by an article that suggests yoga can damage your body."
In this context, an exponent of yoga is a person who believes in yoga and encourages others to do yoga.
The article suggests that people who believe in yoga are surprised and dismayed by an article that suggests that yoga can be bad for you.

Could you say something about 'throw'? I just don't know how to translate it int Chinese because I can't conjure up the image of 'throw off balance'? Does it mean 'throw somebody or something into some condition'?

In the phrase throw off balance, the word throw is not meant to be taken literally. Throw off balance is a fixed phrase that means cause to be off balance.
The phrase can be used to describe someone literally losing their balance:
The uneven ground threw her off balance, and caused her to fall.
It can be used figuratively,

Wow! I see. It has a hiding joke yet! Interesting! Thank you so much!

Thanks