Guys. Im one of the noob beginner who fall in the marketing tactic and bought 1 bottle. LOL.
This thing somehow give me boost energy during workout and i feel stronger and not tiring after finish my workout session.

However when im not consume this, i fell less energetic, weak and really2 tired. Any idea? Does the BCAA do this?
Thanks.

Depends on the intensity of your workout. BCAA works but not necessary cause you get it from whey protein too.
Have pre-workout meal like banana, oat, peanut butter or coffee.. If you're tired throughout your workout, take a candy..

If you have the money and these kind of supplement helps you mentally or physically, by all means go ahead.