I was told that with the longer lasting LR3 it lasts 24 hours and the pumps get so crazy it can get hard to train.. My receptors r very sensitive so anything I take I usually have to do low dose compared to a lot of people.. My friends trip out cuz I run very low doses and get crazy gains.. When taking anabolics I get nasty sides so that's y I wanted to go towards something the body produces naturally like igf..