If something worked for someone else, then ask questions.
Don't assume that it will automatically work for you without finding out all the information. This can lead to unrealistic expectations, disappointing outcomes, or even potential health issues.
I'm fairly certain this is how fad diets continue to grace us with their presence. One thing worked for one person in one super specific circumstance and so our culture blows it up into something that everyone should do.
Sigh. Don't get me started.
If you aren't sure, find somebody who can answer your questions.