Came across these bars as someone who wanted a small bite and caffeine boost before late morning workout classes without having a full meal or whole cup of coffee/energy drink. They work perfectly for that function and so much more. They genuinely taste great while having very clean, healthy ingredients. I don't drink caffeine super often so these effect me pretty strongly - I normally split them in half or threes and still feel the energy boost. However, it's a gradual and natural feeling rather than an anxiety-induced or heart pounding feeling that certain energy drinks or coffees bring. My boyfriend is an avid coffee drinker so he eats a whole one and feels the same energy boost without jitters. They are also PERFECT for travel - you can stick multiple in your bag without having to worry about them crumbling, dishing out $10 for an airport coffee, buying a coffee/energy drink in between classes or meetings, etc. Cannot recommend these enough!