Are you having doubts about your stamina? Starting to wonder if you're a premature ejaculator? Let's lay those fears to rest today with a simple challenge - stroke to a series of timers and try to last until the end. Easy, right? We'll start with a super short timer, then progressively increase the time for each round of stroking. It's easily doable for a normal man with average stamina, but a premie will be lucky to last at all!