My Greatist Routine asks fitness, health, and happiness all-stars how they stay on top of their game. Find the complete series here.

Since turning pro in 2000, Mardy Fish has earned six career titles in singles, eight in doubles, an Olympic silver medal from Athens, and, upon his arrival to the 2012 U.S. Open just last week, a ranking of No. 25 in the world. But it wasn’t always smooth sailing for this hardcourt specialist. In 2010, in an effort to improve his speed and overall fitness, Mardy dropped over 30 lbs (from 203 down to 170 lbs). Today, as an ambassador for Bumble Bee Foods’ BeeWell for Life program, the rising tennis star inspires people to be active and eat healthier each and every day. Read on to see what his winning lifestyle looks like day-to-day.

For more inspiration from Mardy, check out his website, his foundation, and his work with the BeeWell for Life program. And, to keep up daily, follow him on Twitter at @MardyFish.

Are you a greatist, too? Tell us about your #imagreatist routine in the comments below.

Photo by Matthew Stockman / Getty Staff; Design by Bob Al-Greene.