The 10 most popular workouts of 2017

Like Murph (No. 1 on this list), 17.2 has its roots in CrossFit.

It’s a 12-minute routine released during the CrossFit Games, a global fitness competition started in 2007 that tests participants’ ability to move large loads quickly over long distances and it involves lunges, pikes (hanging from a bar and raising your toes to reach the bar), dumbbell squat lifts, and bar muscle-ups (hanging on a bar and swinging to lift your body until your waist touches the bar).

All of these moves are challenging and can cause injury — so don’t do them without a trained professional or before speaking with your doctor.

Daily activities like walking and sitting won’t work the muscles that run along the insides of your legs, but nearly all of the workouts on this list should.

You can also try “bridge,” a move that involves laying on your back with your feet on the floor and a rolled up towel or block between your bent knees. Squeeze the towel or block as you raise your butt toward the ceiling. Hold for a few seconds and lower back down. Start with 3 sets of 5-10 reps.

PiYo is exactly what it sounds like — a low-intensity routine that combines the strengthening aspects of Pilates with the stretching foundations of yoga. Because it’s low impact, PiYo (or plain old Pilates or yoga) is a great option for people with injuries — but depending on how challenging you choose to make it, it can be an excellent workout for anyone.

High intensity interval training (HIIT) involves committing to short bursts of sit-ups, jumping jacks, or planks performed at your maximum capacity. After each 30-45 second interval, you’ll rest to catch your breath and then move on immediately to the next exercise. At the end of the workout (which could really be as short as 7 minutes), your whole body should feel it.

"HIIT can provide similar or greater benefits in less time than traditional longer, moderate-intensity workouts," Chris Jordan, the director of exercise physiology at the Johnson & Johnson Human Performance Institute, told Business Insider in April.

If you thought burpees were merely a component of a workout, we’ve got news for you: they’re also simple and challenging enough to be an entire fitness routine on their own.

To properly execute a burpee, you’ll need to recruit muscles from your core, chest, and legs — toning your limbs and raising your heart rate in the process. It’s easy to do a burpee wrong, however, so make sure you’re in proper form. Start out with 3 sets of 5-10 reps, working up to 3-5 sets of 10-20 reps.

Like many of the other workouts on this list, TRX (which stands for total-body resistance exercise) was originally developed by a Navy SEAL. All of the exercises require nothing but your own body weight and a set of suspension straps which can be mounted to anything heavy enough to support them.

TRX is "great for runners, cyclists, or anyone who is an endurance athlete and wants to have more strength training,” TRX founder, CEO, and former Navy SEAL Randy Hetrick told PopSugar in 2015.

Tabata training, named after Japanese National Institute of Fitness and Sports researcher Izumi Tabata, is an HIIT workout made up of several 4-minute exercises.

Tabata and his team were some of HIIT's first pioneers, having published a seminal 1996 study which suggested that short bursts of intense strength training could have better results than a traditional workout.

Since then, hundreds of workouts based on the model have sprung up around the globe. If you’re looking for one to start with, we recommend the free Johnson & Johnson Official 7 Minute Workout.

Bungee workouts come in many forms, but the most popular classes have participants do a combination of dancing, stretching, cardio, and strength training — all while attached to a bungee chord that's anchored to the ceiling. Moves like squats and push ups will be easier, but the further from the anchor you go, the more challenging the moves get.

Because the workout essentially combines resistance training and cardio while eliminating stress on your joints, it's a good bet for a low-intensity, fat-burning workout. If it’s your first time, let your instructor know to get the best workout and avoid getting injured.

The "Murph" is one of CrossFit's most challenging workouts of the day, or WODs. Named after Lt. Michael P. Murphy, a Navy SEAL who was killed in action in Afghanistan 2005, the routine involves 100 pull ups, 200 push ups, and 300 squats sandwiched between two 1-mile runs.

The brutal routine is what's known as a "benchmark" workout. Assuming you're doing regular CrossFit-style routines at least three times a week, this routine is a great way to gauge your progress, build muscle, and improve your heart and lung health.