The fitness program in Michigan is voluntary, with the cost split between the team and any player.
"Sandy Alderson and other team executives decided after the 2013 season that they wanted to offer a more regimented offseason training program for some of their younger players," Rohan said.
The program is run by Mike Barwis, a former strength and conditioning coach for the University of Michigan's football program. He was recently hired as a consultant by the Mets.
Rohan says Duda has lost about 10 pounds, as Barwis' program is focused mainly on balance, explosiveness, strength, speed and flexibility.
“I feel like I’m more coordinated,” Duda told Rohan.
Mets prospects Dominic Smith, Philip Evans, and Patrick Biondi have also participated in the program this winter.
Read more: Before Hitting and Fielding, Young Mets Seek Edge by Running and Stretching (NY Times)