Sprouts Farmers Market presents a free fitness series at Discovery Green. ACE-certified personal trainer Oscar Sajche makes working out a dance party at Zumba classes this fall. No pre-registration required, but participants must sign a waiver upon arrival. Bring a towel and water, as well as a mat for yoga classes. Yoga mats can be purchased in the office at Discovery Green between 9 a.m. and 6 p.m.