"First day of red sky was intense to say the least. I felt like I could fight 10 men!! Feeling unstoppable !! The following days aren't as intense as the first, but the energy feels clean ,no Jitters, just focused and ready to go. And the energy last ALL day .and didn't interfere with my sleep. Also been using for about a month dropped at least 5 pounds in the first two weeks of use (eating clean and exercising) been combining this with cannibal claw."