Usain Bolt holds the world record for being the fastest man alive. Runners require an incredible amount of strength because the stronger their muscles are the more strength they have to exert and push off the ground as they run.
Engineers design safety helmets for players to protect their heads and brain while being comfortable and allowing the players to perform at their best.
The London Aquatic Center is one of the most technologically advanced pools. Pools can generate a lot of waves when lots of swimmers are in them making it more difficult for the athletes to go fast.