These Athlete's Body Transformations Over The Years Will Blow Your Mind

10 years can make a big difference.

1. LeBron James

exercisebike.net

LeBron became a professional athlete straight out of high school. He was drafted #1 overall in the 2003 NBA Draft by the Cleveland Cavaliers. After a 4 year stint with the Miami Heat, LeBron has come home to the team that raised him. He's entering his 12th season in the NBA and ranking in at 6 foot 8 and 250 pounds.

exercisebike.net

2. Cristiano Ronaldo

exercisebike.net

The Real Madrid all-time leading scorer is one of the fastest—and greatest—players in the world. The all-time leading goalscorer for Portugal has played in 3 World Cups and has won 3 Ballon d'Or trophies. At age 30, he ranks in at 6'1" and 180 pounds.

exercisebike.net

3. Michael Phelps

exercisebike.net

To prepare for competition, Phelps works out six hours a day, six days a week, year round, without fail. Makes sense considering he has more Olympic medals (22!) than anyone in history. As of now Phelps plans to compete in the 2016 Rio Olympic Games. The Olympian ranks in at 6'4" and 195 pounds.

exercisebike.net

4. Serena Williams

exercisebike.net

Serena is the most dominant woman in the world of tennis right now, with 21 Grand Slam titles under her belt. She has been ranked #1 by the Women's Tennis Association on six separate occasions and doesn't appear to be slowing down anytime soon (despite a loss in the semi-finals of the US Open this year). At age 34, the mogul ranks in at 5'9" and 150 pounds.

exercisebike.net

5. Floyd Mayweather

exercisebike.net

You don't get to be undefeated (49-0-0) without an intense training regimen. The featherweight boxing champion ranks in at 5'8" and 150 pounds. Mayweather announced that his most recent fight would be his last, but rumors of him going for fight #50 have not slowed down, so who knows when we'll see him in the ring again.

exercisebike.net

H/T exercisebike.net