What has top Mets prospect Noah Syndergaard been doing this winter, apart from being tossed into the slow-burn Troy Tulowitzki trade discussions?

Well, from the Instagram looks of it, the 22-year-old power right-hander has kept busy supporting his Dallas sports teams … when’s he’s not hoisting up some iron in his Christmas PJs.

The 6-foot-6 Syndergaard — who is expected to debut in 2015 for the Mets (if not the Rockies!) — got into the holiday spirit by sharing a weight-room session in a seasonal onesie.

Syndergaard otherwise has been occupied celebrating the Cowboys’ revival, kicking up his feet at a Mavericks game and hitting the links.

Life is good, his social media accounts seem to declare, no trade-rumor stress to see here.