I'm a fitness trainer with over a decade of experience but this new workout style has cut my exercise time in half

Freelance fitness writer Jennifer Rizzuto performs a dumbbell workout. She is in a living room, with a book case and kettlebells behind her and a yoga mat on the floor. She is hinging over at her hips so her torso is nearly parallel with the floor, a pair of dumbbells grasped in each hand, with her elbows bent and hands held close to her hips. .

The concept of hybridized fitness has been gaining momentum, thanks to its efficient combination of strength and cardio.

As a certified personal trainer and someone who enjoys exercise, efficiency has never been my top priority—I’d rather take my time than rush and risk an injury. However, with a full schedule recently leaving me short on time I decided to try Kathrin Kunz’s 30-minute hybrid fitness routine.