Let’s face it: going to the gym sucks. It’s inconvenient. It’s expensive. Let’s not discuss the smell.
But there are plenty of approaches to getting in shape that don’t require a membership. Some don’t even require leaving the house.
One of those techniques is high intensity interval training, a form of exercise that alternates quick bursts of sweaty movement with slightly calmer recovery periods and requires only your body weight.
Fitness guru Shaun T. is a firm believer in the method, and created a special form of interval training called the “Insanity” workout that aims to transform the body in 60 days. But even Shaun, who recently published a book about his approach called “T is for Transformation,” has days when he doesn’t feel like doing a full workout, he told Business Insider.
On those days, there’s one simple move to master: the push-up and plank.
Unlike crunches, sit-ups, or other moves that work only one muscle or muscle group at a time, planks — which involve holding yourself on your hands and toes in a pre-push-up position — recruit muscles from all over your body. The physicians at Harvard Medical School call planks “the gold standard for working your core.”
“Holding a plank works your your shoulders, your chest, your core, your butt, your calves,” Shaun said. “It works your whole body.”