Kettlebells are a versatile tool that can make your home workouts more challenging. You can use them to gain muscle or to add some heft to your aerobic exercise. They're also great if you want to build strength gradually, as you can simply swap out your lighter model for a heavier one once your workout becomes too easy.
I've found they're particularly useful for adding weight to lower-body moves like goblet squats, but you can also use them for classic moves like kettlebell swings and upper-body workouts, too.
