New Year, New You in 2016

Guess the Celeb Get-Fit Tip

From going gluten-free to six-hour workouts, see if you know how these stars stay in shape

Correct Answer: Ryan Lochte

To give fellow swimmer Phelps a run for his medals at the 2012 Olympic games, Lochte intensified his workouts by amping up his weight training, including flipping 850-lb. tires as part of his regimen. "I wasn't really satisfied with my outcome in 2008," he told PEOPLE, "so I needed to change some things."