1. Treadmill: The left armrest can adjust the slope and the right armrest can adjust the running speed. The silver pieces on both armrests are hand-held heart rate sensors. On the panel, the number on the left adjusts the slope and the number on the right adjusts the speed. The dial can display speed, heart rate, running time, distance, etc. There is a red emergency stop button in the middle, which can be pressed when the running speed is too fast and there may be danger.

2. Spinning bike: After warm-up, adjust the seat height and riding resistance, lean forward slightly, straighten your arms, tuck in your abdomen, breathe with your abdomen, buckle your legs parallel to the crossbar or slightly inward, keep your knees and hips in harmony, and don't swing from side to side. Pay attention to the rhythm of riding.

3. Exercise bike: After warming up, adjust the seat height and riding resistance, straighten your arms, tighten your abdomen, breathe with your abdomen, keep your knees and hips in harmony, don't swing from side to side, and pay attention to the riding rhythm.