(Littleton, Colo., Jan. 25, 2008) Robert (Robby) Martin rides the stationary bike (spin bike) in the weight room. Students wear heart rate monitors with the goal of keeping their rate within an elevated range for 20 minutes, and they are allowed to choos
Steve Peterson, (Littleton, Colo., Jan. 25, 2008) Robert (Robby) Martin rides the stationary bike (spin bike) in the weight room. Students wear heart rate monitors with the goal of keeping their rate within an elevated range for 20 minutes, and they are allowed to choos (01/25/2008), [435994874] . Denver Public Library Digital Collections, accessed 17/01/2026, https://digital.denverlibrary.org/nodes/view/993985