Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Working for me..

I feel a difference already only been using for a week on days I lift. Which has only been 4 days so far. Take 2 pills then wait 30mins and lift. Had increased energy day 1 and by day 4 I'm shredding through my routine. I had to add moresets to my workout cause have so much more energy then before.. Also my wife is very pleased says I'm standing extra tall and strong in the bed if you know what i mean..Only been 4 days I feel it working for me in my body. haven't seen any muscle growth yet but again only 4 days. Can wait to see how i feel in 30 days...i'm 6'1 280 wasn't looking to add size trying to shred up already bulky looking to rip out. Also my sex drive has increased dramatically !!!