I know what you mean by pump or pumped. I did a lot of bodybuilding in my 20s so I’m well aware. I never really took the time to really learn and understand what creative was back then, but we all took it cos it ‘pumped’ us up, it made our muscles swell and fill out more as we lifted. I’m not sure why you would want it for cycling I really don’t. To me it’s a waste of time and money.