While some New Yorkers hit the park for a post-holiday run or bike ride, others are making a stop for a different kind of workout - dropping off their Christmas trees.

"It's a good initiative; it makes the whole live tree thing, it gives it a little extra life, I guess you can say," said Martin Lucas.

According to NYC Parks, more than 50,000 trees were mulched last year. With 76 drop-off sites across all five boroughs, that number is expected to grow this year while supporting a good cause.

"Bring your tree to Mulchfest. It keeps it out of a landfill, helps keep weeds out of trees, and provides an insulation blanket to the soil during these really cold days," explained Mark Focht, acting first deputy commissioner of NYC Parks.

For some leaving the city for New Year's celebrations, parting with their tree is a bittersweet experience.

"What we don't want is to come back after the New Year and have the tree up. It's too sad, you get those post-Christmas blues, so we get it out," said participant Bob Doto.

For others, saying goodbye is a little more sentimental.

"I think, if you have the tree, have it up through New Year's. Stay celebratory until the end of the holiday season," said Jessica Silver.

NYC Parks asks anyone bringing in their tree to make sure it's stripped of all decorations before hitting the chipper.

Mulchfest runs through Jan. 11, and NYC Parks says you can grab a free bag of mulch during Chipping Weekend, Jan. 10 and 11.