The 14 Toughest Do-Anywhere Workout Moves

While it's definitely one of the toughest moves, it's also considered one of the most fun. Breakdance thruster is a full-body movement that improves your range of motion, coordination and brain-body connection.

HOW TO DO IT: From standing, bend down, put your hands on the ground and jump your feet back to a plank. Next, step your left foot out to the left and bring the right leg under your body while lifting up the left arm. Then kick back to a plank and jump up to standing again. Repeat on the other side. To modify this movement, step one leg back at a time (instead of a full jump).

Try it!See this exercise in the 36-minute SOLDIER workout video

This move might not look difficult, but it'll call on all of your focus and strength to complete. Pike push-ups are an upper-body exercise, giving you toned and sculpted shoulders.

HOW TO DO IT: Form an inverted V with your body, placing your hands on the ground and coming up on your toes. From here, drive your head down toward the ground and bend your arms. Then push back up to the inverted V. Repeat on the other side. Focus on your shoelaces to keep your neck in the correct position. To modify, do the movement from your knees. If you're feeling like an extra challenge (kudos to you!), lift one of your legs up behind you.

Try it! See this exercise in the 34-minute IRON workout video

The intent of this exercise is to warm-up for your shoulders, but as the heat builds, it becomes a challenging move. The shoulder series helps you develop stronger shoulders, which help frame the body making your waist look smaller. It's a five-part exercise with 30 seconds of each movement (two and half minutes total).

HOW TO DO IT: Start with shoulder circles forward and back. Next, move your hands in front of you, creating a 90-degree angle with your elbows. Bring your hands up so that your forearms are parallel to your body. Advance by bringing your arms up from the bent goal post position directly overhead, touching your thumbs. Next, extend your arms straight out at your sides and rotate your entire arm like you're wringing out your shoulder. Lastly, extend both arms out straight and pull them toward the back of the room, repeating in pulses.

Try it! See this exercise in the 41-minute REFUEL workout video

This isolated ab exercise requires only a small range of motion but delivers big results. You'll build core strength while toning your obliques and transverse abdominal muscles.

HOW TO DO IT: Start on the floor on your side. Extend your arm along the floor above your head and place your opposite hand on the floor (for balance). Next, lift both your raised arm and both legs off the floor. Lower back down and pulse. Once done, repeat on your opposite side. To modify, bend your bottom arm so that your hand supports your head and bend the knee of your bottom leg (putting your leg behind you) for added support.

Try it! See this exercise in the 34-minute IRON workout video

Another movement that will call on your focus and strength, the Hindu push-up works your chest and shoulders while building strength and range of motion.

HOW TO DO IT: Start in an inverted V — hands on the ground, balancing on your toes. From here, dive your head down toward the ground, and then swing your head through between your arms with your body following, moving into upward facing dog. From here, push your body back into the inverted V position and repeat. To modify, do this movement from your knees.

Try it! See this exercise in the 38-minute STEEL workout video

This plyometric move works your glutes and builds explosive power. It'll challenge you, and as Nicky says, "It'll burn so good."

HOW TO DO IT: Step into a lunge so that your back knee almost "kisses" the ground. Just as you reach this point, jump up and switch legs in mid-air so that you land with the opposite leg in front. Repeat, switching legs with each jump. You can use your arms to help jump you up and keep your balance. But don't let your knee to go past toes in the lunge position and keep your chest upright. To modify this movement, take out the jump and step back into the lunge.

Try it! See this exercise in the 32-minute IGNITION workout video

This movement tests your balance and improves your range of motion while engaging your glutes, abdominal and leg muscles.

HOW TO DO IT: Put your arms out to your sides for balance. Stand on one leg and lift your other leg, bending at the knee. From here, extend the bent leg straight out and then rotate this straight leg out, around and back behind you before finally bringing down to the ground and repeat. Once done, repeat on the other side.

Try it! See this exercise in the 35-minute WARRIOR workout video

You may have heard of mountain climbers, but Nicky's version takes it up a notch. Circular mountain climbers increase the range of motion in your lower body and help tone your quads and abdominal muscles.

HOW TO DO IT: Start in a high plank. Take one foot and swing it out and around to the hand on that same side, getting as close to your hand as possible. Next, swing the foot back to center and immediately hop your other foot out and around to the hand on that same side. Continue this back and forth motion. To modify this move, remove the hop; just step your foot up toward your hand, and then step it back.

Try it! See this exercise in the 34-minute COMBUSTION workout video

An overall kick-your-butt cardio exercise, plank jump run will get your heart rate up in no time, and the interval structure of the workout will keep you burning calories even after you're done working out.

HOW TO DO IT: Start in a plank with arms and legs fully extended. Next, jump both feet toward your hands and once they land, run them back until fully extended. Now repeat. To modify, do a small jump forward and walk the feet back.

Try it! See this exercise in the 38-minute STEEL workout video

The movement is just like it sounds. The single-leg jump squat in the EXPLOSION workout helps you develop explosive power while toning and strengthening your quads.

HOW TO DO IT: From standing, slightly lift one foot off the ground behind you, and then squat down to touch the ground in front of you. From there, jump up, return to standing and repeat. To modify, keep your back foot on the ground for balance and take out the jump. Once done, repeat on the opposite leg.

Try it! See this exercise in the 31-minute EXPLOSION workout video

This move brings to mind Nicky Holender's famous line: "If those legs are shakin', those calories are bakin'." While it may not be the toughest move to execute, it's definitely one of the toughest moves to stick with until the end. We can practically guarantee you'll be raining sweat when it's done.

HOW TO DO IT: Extend both arms overhead, and then sink into a squat, keeping your chest upright. From here, you jump and squat, jump and squat while turning your body in a circle. Once you've done completed a circle, reverse the direction. To modify this movement, remove the jump between squats.

Try it! See this exercise in the 36-minute SOLDIER workout video

This exercise, found in the IGNITION workout video, is what trainer Nicky Holender calls "the mother of all burpees." Tuck jump burpees are not for the faint of heart. It's a full-body movement that builds explosive power while torching calories.

HOW TO DO IT: Do a burpee by lowering your hands to the ground, kicking your feet out to a plank, and then perform a push-up. Jump your feet back up to your hands and instead of standing up, do a tuck jump. When you land, go back into the burpee and repeat. To modify, step your legs out in the burpee and instead of a tuck jump, do a small hop and raise your arms.

Try it! See this exercise in the 30-minute IGNITION workout video

As if planking isn't challenging enough, STRONGER trainer Nicky Holender takes it up a notch again by adding in a "pop." This is a movement he has all of his top athletes doing, and it'll work your core, triceps and shoulders.

HOW TO DO IT: Start in a plank. With a slight pop in your hips and arms, jump your entire body to the right, and then back to the left while keeping a solid plank the entire time. If you're really advanced, move your body in a box shape (forward, side, back, side). Or to modify, from the plank, step your right hand and right leg out to the right, step them back, and then repeat on the left.

Try it! See this exercise in the 31-minute EXPLOSION workout video