See the intense workouts that 12 US athletes are putting themselves through to get ready for the Olympics

Rob Schumacher/USA TODAY Sports/Reuters

With the start of the 2016 Summer Olympics less than a month away, the US athletes are preparing for the games in every way they can. 

The athletes who qualified are now winding down from the Trials — and starting to train and diet properly to get themselves ready for the biggest competition of their lives.

We rounded up some of the biggest US names competing in the 2016 Summer Olympics and found out how they're training.

Beach volleyball player April Ross works out on the beach and in the gym. She trains in the sand by doing cardio and beach volleyball movements while wearing a weighted vest.

Instagram Embed:
http://instagram.com/p/BHj859jggGB/embed/
Width: 658px

Source: ESPN

The 4-foot-9 gymnast Simone Biles trains six days a week for five to six hours at a time.

Instagram Embed:
http://instagram.com/p/BHk1z27jeFw/embed/
Width: 658px

Source: Business Insider

New father Michael Phelps is the man behind the 12,000-calorie diet. Prior to the 2008 Beijing Olympics, Phelps' diet consisted of fried egg sandwiches, two pounds of pasta, and an entire pizza in one day. Now, his caloric intake has decreased quite a bit, and he eats the normal amount of calories for an athlete, with meals like cucumber, tomato, and asparagus salad.

Instagram Embed:
http://instagram.com/p/BHh9RvEg_n9/embed/
Width: 658px

Source: Washington Post