Editor’s note: This article was originally published September 11, 2013

Add this one to the you-don’t-need-to-spend-a-lot-to-get-fit pile.

Every Saturday, Stronghorn Fitness offers a donation-based group workout at Zilker Park. And the donation, head trainer and owner Jess Martin says, can be handed over in sweat equity.

The hour-long session typically includes a 15-minute warm up of lunges, squats and jumping jacks, about 20 minutes of circuit workouts and high intensity interval training, and a cool down featuring yoga stretches and breathing exercises.

Bring a mat or towel and a good attitude.

The group meets at 9 a.m. near the volleyball courts in the shady area off Lou Neff Road, on the north side of Barton Springs Road.

For more information go to www.stronghornfitness.com.