This is an interval-based cardio exercise program that is suitable for people with painful knees, that you can do at home without any equipment.

Intensity level: Beginner to intermediate
Timer: 30/15sec (work/rest)
Workout: Perform 3-5 sets.

Exercises:
1. Hinge and Jab
2. High Knees Tap
3. Modified Jumping Jacks
4. Jogging on the Spot
5. Plank with Knee Tap
6. Butt Lift