4 ways to swim freestyle and they can all be fast. You just need to practice the small details of each one. I hope this video helps you finding the best way to swim for you.
00:00 - Windmill
02:31 - Horse
05:19 - Boat
06:36 - Arrow 
08:02 - How should you pick your style?
08:52 - 6 Hacks
10:13 - Free Workout