What's Happening Physiologically That Stops You From Lifting That Weight?

Dr Luzif explains what's actually happening physiologically that stops you from being able to exert the muscles like any more than your body allows you to. Heather asks if there is a scientific reason why even though they're genetically identical, twins don't develop at the same rate. Dr Luzif gives his theories of how long you need to leave and then we go on to other questions.