When it comes to working out, everyone has their favorite method — including celebrities.
But not all types of exercise carry the same benefit. Which one you do depends on your goals: Do you want to bulk up? Slim down? Or just get fit and healthy?
Given all the different advice out there, it's important to know what the research supports.
Here are the workout regimens of some of our favorite celebrities, which we've evaluated according to science.
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Taylor Swift keeps a beat on the treadmill.
The scoop: When the pop diva is on the road touring, she makes sure to spend an hour on the treadmill every day. "For me, running is about blasting a whole bunch of new songs and running to the beat. It's also good because it makes me find a gym wherever I am," Swift said, according to WebMD.
Should you do it? Yes! Running is a great form of exercise. A 2014 study of more than 55,000 adults published in the Journal of the American College of Cardiologists found that runners were 30% less likely to die of any cause, and 45% less likely to die of cardiovascular causes, compared with nonrunners. And short, high-intensity runs may have many of the same benefits as longer runs, research suggests.
Michael B. Jordan did an intense workout for "Creed."
The scoop: To get ridiculously ripped to play a boxer in the new Rocky movie, "Creed," Jordan worked with personal trainer Corey Calliet. His workouts included 45-60 minutes of cardio, boxing training, and an intense regimen of sit-ups, push-ups, squats, and other exercises, according to Men's Journal. (See the full workout here.) He paired these workouts with a strict high-protein diet to build muscle.
Should you do it? Probably not. Unless you're planning to star in a boxing movie, you don't need to follow such an extreme workout plan. The cardio workouts and high-intensity exercises may be good for you, but boxing and the head injuries it causes are linked with a host of problems, including chronic traumatic brain injury, which in the long term can lead to punch-drunk syndrome, or chronic traumatic encephalopathy, a tragic brain disorder also found in football players.
Kim Kardashian sweats it out at Barry's Bootcamp.
The scoop: The reality-TV star is just one of many celebrity devotees of Barry's Bootcamp, a popular fitness studio that debuted in California in 1998 and now has 18 locations around the US, Norway, and England. The nightclub-esque gym offers hour-long workouts that include 25-30 minutes of interval cardiovascular treadmill routines and 25-30 minutes of strength training with free weights, resistance bands, medicine balls, and other equipment.
Should you do it? Perhaps. One of our reporters tried a week of Barry's workouts in Manhattan, and concluded that the classes helped her build endurance and shave more than a minute off her mile time. Also, studies show that interval training may have many of the same benefits as longer workouts. But it ain't cheap: Though prices vary, a single class at the Chelsea location will set you back $34.
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