HOW TO GET STACKED LIKE ZACK

George’s half-hour ‘every minute on the minute’ conditioning session is guaranteed to push your limits. (Scale down the reps as needed)

01/ 20-CALORIE ROW

Start each drive with all the power going through your legs (A), with only a final pull with the arms (B). The balance of effort should be 70% legs and 30% arms. When you hit your 20-cal goal, rest for the remainder of the minute.

02/16 BURPEES

Squat and place your hands on the floor between your feet. Jump your feet back into the top of a press-up; lower your chest (A). Straighten your arms and hop your feet forwards before jumping with your hands above your head (B).

03/70 DOUBLE-UNDERS

Keep your arms close to your body (A). Now use a fast ‘flick-flick’ of your wrists to spin the rope twice (B). Time it with the first upward motion of your jump to allow plenty of time for both rotations. Too tricky? Skip normally for 45 secs instead. Back to the rower...