Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cool Mint with caffeine, loved it!

I love this Clif bar! I have avoided caffeine over the past several years because it was just too strong for me. However, this Clif bar really works for me without giving me the jitters. Nice to have something that can wake me up for the day without making me feel wired and later causing me to crash. I usually eat one of these around midday when I'm being physically active, it truly does give you an extra little boost to help you meet your goals in an energetic but not frenzied way. I have no trouble going to sleep at a reasonable time and sleeping all night. I think it has 50mg of caffeine per bar.