This is a truly top tier pre workout. It's definitely not a daily driver, but doesn't make you feel cracked out and like you're completely frying your brain and nervous system like a lot the heavy hitters can make you feel. So, there's no need to be scared of this one. The focus is like a laser beam and lasts a solid 4-6 hours straight. The focus lasts longer than the energy, which persists for a good 2 hours before it tapers off, but there's no crash after. Of course, it also has a solid pump blend and you'll feel that. I look forward to taking this every time. Just get it and you won't be disappointed, but definitely weigh the scoop! The full weighted dose is way more than a rounded scoop. MOre like 1.5 scoops. Love this one will definitely be buying again.