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The fitness guru behind the 'Insanity' workout told us the one move you should master now

Business Insider logo Business Insider 11/12/2017 Erin Brodwin

a man in a black shirt © Shaun T. 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.

plank woman fitness gym exercise workout © Provided by Business Insider plank woman fitness gym exercise workout "The push-up and plank will change your life," Shaun said.

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."

Still, to get these benefits and to prevent injury, it's important to do the move properly, Shaun advises. To do that, he suggests starting out with planks and making sure you've got your form down before adding in the push-ups, which can come once you've mastered plank.

To get into plank, recommends starting out on your forearms. First, lie face-down with your legs extended and your elbows bent in 45-degree angles directly under your shoulders. Clasp your hands. Your feet should be hip-width apart; your elbows should be shoulder-width. Next, tighten your abs and tuck your toes to elevate your body. Your body should be in a straight line from your head to your heels. Hold it for one minute.

As you get stronger, you can gradually build up to maintain the position for longer periods of time, and extend your arms to hold yourself up on your palms — the classic form of plank.

Once you've mastered plank and you can hold it for a few minutes at a time, you can add in the push-ups, but make sure your spine stays straight the whole time. You should be able to keep a glass of water on your back as you go down and up," Shaun said.

Eventually, you can aim to hold plank for five minutes at a time and do as many as 100 push-ups, Shaun said.

"If someone hits 100 push-ups before they leave in the morning their entire day will change,"he said.

Slideshow: 10 scary things that happen to your body when you eat too much sugar (Provided by Insider) 

<strong><strong>The INSIDER Summary:</strong></strong><strong>Scientists are constantly studying and debating the risks and consequences of a sugar-rich "Western diet."</strong><strong>Eating too much sugar is correlated with weight gain and obesity.</strong><strong>Scientists have also associated eating too many sweets with increased risk of heart disease.</strong><strong>Other effects include skin problems and anxiety.</strong><p><br> We already know that modern Western diets are loaded with <a href=""> added sweeteners</a> (even our bread has excess sugar in it). With obesity numbers skyrocketing and the nutritional science community oscillating between sugar, fat, and carbs as the scapegoat du jour, it's hard to know what exactly is safe to eat. </p><p> There are alot of <a href="">myths surrounding the effects sugar</a> has on our health. But even though humans need glucose to survive, it's no secret that the exorbitant amount of sugar found in everyday foods like processed snack foods, canned food, and soft drinks have become too much for our bodies to handle.</p><p> INSIDER has rounded up 10 of the scariest effects a sugar-rich diet can have on your overall health, with expert input from Dr. Jennifer Haythe, a cardiologist at Columbia Presbyterian Hospital in New York, Rebecca Lee, a registered nurse and founder of <a href="">,</a> and Colette Heimowitz, a nutritionist at Atkins Nutritionals, Inc. who has worked with celebrities like Kim Kardashian.</p> 10 scary things that happen to your body when you eat too much sugar


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