Here's a 15 minute cardio workout that will challenge your body in a short time.
To make this workout effective, you should move from one exercise immediately to the next without rest. Each exercise will last 5 minutes. You will need an elliptical machine and a bike to complete this workout. You also need to keep a journal of your workout.
Make sure to choose equipment that has settings for rpms and levels.
Here's a summary of your workout:
1. Jogging-Outside
Time: 5 minutes
2. Elliptical Machine
Time: 5 minutes
Level: 7
Speed: 125 strides per minute
3. Bike
Time 5 minutes
Level: 7