Kettlebell workouts are one of the most versatile forms of functional training around, and Onnit Academy senior kettlebell coach Eric Leija knows a thing or two about making it rain muscle pain using a single kettlebell and less than 20 minutes of your time.
You only need a medium to heavy weight — as a guideline, he uses 16kg — and despite only lasting a short time, this four-move kettlebell complex targets and strengthens muscles everywhere, including your back, chest, arms, shoulders, core and legs.
