On May 15, Lacy weighed in under the 255 marker at 253 pounds and earned himself $55,000. There will be six more weigh-ins. The next is on June 12 and will require Lacy to be at 250 pounds or less, according to a league source.
On Friday, Lacy was asked what kinds of things he has eliminated from his diet to hit the benchmarks and get in shape.
"What kinds of things? Eating a lot," Lacy said. "I'm from Louisiana. I like good food. Gotta change it."
Lacy said he would continue to do P90X workouts to stay in shape.
Asked how he initially reacted to the idea of the weight clauses, Lacy said, "Challenges. As a competitor, you want to be challenged. So it's a positive challenge. At the end of the day, it helps me personally too, so why not?
"I have a great support group behind me from coaches to players to the nutrition team. So everybody's positive, which helps me because I know I have a group of people behind me pushing me so it's all working out, it's all going great. I've just got to continue to go that way."
Lacy weighed 231 pounds coming out of Alabama in 2013. The Milwaukee Journal Sentinel reported that he was up to 267 pounds during one of his free-agent visits this offseason.
During the season, Lacy will have to weigh 245 or less to earn the bonuses. That's the weight determined by coach Pete Carroll and the Seahawks to maximize Lacy's effectiveness.
"Whatever he likes, that's what I like," Lacy said.
Lacy is still limited by an ankle injury he suffered last year with the Green Bay Packers, but Carroll said Lacy should be full go for training camp.
The Seahawks and Lacy agreed to a one-year contract that includes $2.865 million guaranteed. Lacy can earn an additional $2.685 million through incentives, including the weight clause.
A second-round draft pick by the Packers in 2013, Lacy posted back-to-back 1,100-yard seasons to start his pro career and was the NFL's offensive rookie of the year in 2013.
But his weight became an issue in 2015, when Green Bay coach Mike McCarthy said Lacy needed to come back in better shape after rushing for just 758 yards.
He worked out with P90X founder Tony Horton last offseason and was effective in five games in 2016, averaging 5.1 yards on 71 carries before suffering the ankle injury.