Women's national team soccer star Alex Morgan is incredible fit. Yes, that's pretty clear when you look at her - she has strong legs and core muscles and can run extremely fast. You can tell she takes care of herself throughout the season and the off-season. What type of workout routine does do, besides the Yoga and the work with the soccer ball? She certainly does a lot of core work.
Watch how Morgan tries not to laugh while she runs through a series of exercises to build core strength and speed. At least it seems like when they're filming some of the videos below Morgan is on the verge of laughing, take a look for yourself. What do they say though, laughing is an excellent way to increase core muscle strength.