Hi Charlee, your workouts are amazing! I have done close to every workout not requiring dumbbells over the past 3 weeks but I want to get into the workouts with weights but dumbbells seem to be sold out everywhere or selling at ridiculously exorbitant prices. I have 15lbs and 25lbs kettlebells. Can I substitute these? Any other recommendations for dumbbell alternatives to use for your workouts with weights?