Sore knees? A personal trainer recommends this low-impact HIIT workout to get your heart pumping

Trainer Jennifer Rizzuto performs a squat indoors. She is wearing leggings, a vest and sneakers and is exercising on a mat. Her knees are bent, pointing out to the side, and her hands are clasped at chest height. Behind her we see a picture on a wall, kettlebells and a bookcase.

I’ve been an avid runner for almost twenty years, and while all that pavement pounding has come with plenty of benefits, there have been some drawbacks too. My knees, hips, and ankles can get cranky at times, and that can prevent me from hopping on the treadmill for my daily dose of cardio

One such flair up had me scrolling through Instagram in search of a low-impact alternative, where I found fitness influencer Cindy Yu’s No Jumping HIIT workout. The movements she included looked fun, engaging, and friendly on the joints, so I decided to give it a try.