This stuff was amazing. I took it this morning because I was still a little groggy from drinking two nights prior. Expected to have a terrible workout but figured it was best to get in and see what happens. Actually hit a PR on the bench press. Got home, took down christmas lights, shocked the wife by doing laundry, fix the toilet, vaccumed and a handful of other things. Just couldn't stop doing tasks despite waking up feeling crummy. I'll be buying this stuff in the very near future and highly recommend it. Thanks for the free sample.