One kettlebell, five moves, and 15 minutes are all you need to build strength and muscle all over

A man performing a kettlebell swing at home

It's easy to accidentally overcomplicate your workouts, with challenging techniques or long sessions packed full of exercises. But sometimes, simplicity is key, especially when you're tight on time. 

That's this 15-minute workout, which uses just a single kettlebell to spike your heart rate and develop strength across your entire body, is such a great option to build functional muscle in a pinch.