You're standing on the start line of the final with nothing between you and a gold medal, apart from seven other runners. Your heart is pounding, your head is buzzing and you're ready to put in the best performance of your life. After all, you're powered by the most powerful drug there is, the roar of a home crowd.
Marlon Devonish is Team GB's 100m and 200m sprint star and the man whose body we get an inside view of in this new ad for GlaxoSmithKline.
The pharmaceutical company is providing anti-doping science for the Olympic games, spotting drugs cheats and keeping the competition fair for all.
Devonish stands on the start line psyching himself up. As the noise of the crowd begins to build, we get to see the effect this has on him. We fly through his body, watching synapses fire, his heart pumping and lungs expanding and contracting. Champagne glasses explode and tornadoes spin as the tension reaches a crescendo.
He takes his mark and the adrenaline pumps. Devonish explodes from the blocks and it becomes clear, the crowd are driving his performance more than any drug could.
The ad, by TBWA, has earned over 10,000 views since it was launched two days ago. The fast-paced ad has drawn the attention of bloggers and fans alike, with the impressive anatomical animations earning praise.
So take your marks, get set and give this awesome ad a watch.