Today's rock stars don't just prep for the stage with their instruments. Discover the fitness routines of Mick Jagger, Beyoncé, and more, and how you can adapt them to your life.
You’ll need a pair of dumbbells, plus maybe some water and a towel, as this workout combines cardio moves and strength exercises. This is also known as ‘high-intensity resistance training’ — ‘HIRT’ ...