Forget the gym — you only need these 5 moves and a kettlebell to build upper-body muscle

Personal trainer Ollie Thompson performing a kettlebell gorilla row.

When you're tight on time, it's hard to find ways to hit your fitness goals. But you don't need a gym's worth of equipment or loads of spare time to build muscle in your upper body — just a bit of space and a kettlebell. 

This short routine is designed to raise your heart rate, work several muscles simultaneously for improved efficiency, and strengthen your chest, shoulders, and arms.