Teaching kettlebell is one of my favorite classes to teach. What I like most is how you truly can get a total body workout that's efficient and ideal for people of all ages and sizes. One of my personal favorite kettlebell exercises is the windmill. It's great for the core, upper body strength and it improves flexibility. There are many variations and thus everyone can enjoy this exercise. To mix things up a bit I do include a variety of core strengthening exercises at the end of every class.