Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Improved energy!

My brother recommended rhodiola for increasing physical energy. I have found that there is a definite "buoying" effect, such that there is extra energy and bounce in my step. The effect is not instant, but after about 3 weeks I can see that projects which were previously languishing are now getting done. My kitchen pantry is finally cleaned out - something I've wanted to get done for years.No side effects as far as I can tell.