The downfall of swimmers is their drag and I don’t mean that they are boring. Drag is what slows a swimmer down in their swim stroke techniques. It can be reduced with core strengthening exercises like leg kicks, crunches, and side sit-ups. Doing planks, back push-ups, yoga push-ups and using an ab wheel will also strengthen a swimmers core and get them gliding through the water more swiftly. Watch this video and learn these exercises with some experts.