Spiderman — Just like Spiderman, you too can run up walls! Facing the pool wall, use your arms to keep your head above water while you run your feet up and down. The challenge in this move lies in using your arms to keep you from floating away from the wall. It's a cardio move but it's also a sneaky arm move—that Spiderman, he's all about deception. Tip: If your spidey sense starts tingling, look for sharks.