No matter what your skill level is in the pool, there is always room to improve your strength. I'm not talking about massive amounts of weight lifting or bulking up. I'm talking about improving your core strength. When we swim, we are constantly engaging our cores into every movement. Many novice and intermediate swimmers have trouble with this concept initially. They think that if they move their arms and legs are fast as they can or as big as they can that will get them from the start to finish in record time. As we've discussed in the past, this is never the case. Our limbs are just extensions to our true power generator -- the core.