People are standing on treadmill in a gym.
several people running and walking on treadmills facing windows
Some mean walking on a treadmill and other standing behind them in a gym house.
People use cardio equipment in a cruise ship gym.
People exercise on treadmills in an indoor gym while other people rest or perform other exercises.
A man is jogging on a treadmill as others behind him gather together.
People are working out on treadmills in a gym.
The people are running on the treadmill near the window.
A man running on a treadmill at a gym.
A group of people in a gym with a man in front on an elliptical.