IT IS DESIGNED TO ADD THE COMPETITIVE EDGE TO YOUR TRAINING PROGRAM. WE USED PATENTED INGREDIENTS TO PUSH THE CARBOHYDRATES INTO YOUR MUSCLES DURING YOUR WORKOUT, LEAVING YOU WITH A SKIN STRETCHING PUMP, AND ENERGY (GLYCOGEN) TO WORK HARDER, LONGER! DEMO DAY IS FOR ANYONE THAT IS LOOKING FOR MORE SUSTAINED ENERGY LEVELS, OR HAVE A ROUNDER & FULLER LOOK TO YOUR MUSCLES BY MAINTAINING THE PUMP THROUGHOUT YOUR WORKOUT. DEMO DAY CAN BE USED PRE, INTRA, OR POST WORKOUT DEPENDING ON YOUR GOALS AND NEEDS.