The most successful people know that exercise is the key to mentally and physically pushing themselves further, though some are more willing to keep up the habit than others.
Numerous studies have found exercise to be one of the most important habits you can develop to transform your life. Working out can make you healthier, happier, and better able to sleep; it can boost your memory, concentration, and mental sharpness; and you don't need to spend a lot of time doing it to reap the benefits.
From tennis to surfing to basketball, here are the exercise habits of 19 successful people.
Vivian Giang and Lisa Eadicicco contributed reporting to this article.
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President Barack Obama sweats it out 45 minutes a day, six days a week

Exercise has helped the president become the man he is today. Obama admitted in his autobiography "Dreams From My Father," to being a casual drug user and underachiever until he started running three miles a day.
Today, he continues to stick to his workout routine, which is a combination of strength and cardio. In an interview with Men's Health, Obama said he works out for 45 minutes, six days a week. He'll even wake up early to work out despite not being a morning person.
He's also known to play basketball on courts in federal buildings around Washington.
Democratic presidential candidate Hillary Clinton is a devout Yogi

To stave off the presidential-candidate-30, Clinton takes brisk walks and practices yoga on the campaign trail, AP reports. When at home, she opts for a workout regimen of yoga and water aerobics, she told People magazine.
Billionaire tech investor Mark Cuban gets at least an hour of cardio per day

Cuban, a regular judge on the ABC reality show "Shark Tank" and owner of the Dallas Mavericks, incorporates cardio workouts into his everyday routine.
Knowing he'll miss a workout every now and then because of travel, Cuban told The Dallas Morning News he aims for at least an hour of cardio six days a week, which can include using elliptical and stair gauntlet machines, playing basketball, and taking kickboxing and Latin fusion aerobic classes at Lifetime Fitness.
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