
I do nothing but go to the gym all day. I have no responsibilities, don't have to work, get groceries, drop kids to school, walk the dog, or do anything else. So, I can afford to spend an hour perfecting my biceps curls to work a single set of muscles.
I imagine that's how your life is too, right? That's why I strongly recommend that you do not pick up one of the best kettlebells and do this short, intense but extremely effective full-body workout in just 30 minutes. If you train every muscle in your body in just half an hour, what else will you do all day?