If you’re looking for a total-body cardio workout that’s kind to your joints, swimming is it. And it can be a total calorie-burner, too. Just keep a few things in mind to get the most out of it.
First, as with any exercise, the number of calories you burn by swimming depends on the intensity with which you do it.
How much do you have to swim to lose weight?
Swimming at a somewhat casual pace—about 50 yards a minute—burns about 625 calories per hour. Kick that up to a high-level recreational athlete, where you’re swimming 75 yards in a minute, and you’ll burn a little more than 750 calories an hour. To lose a pound, you’d want to burn about 3,500 calories. So if you swam for an hour three times a week, you’d burn a pound off in two weeks. And that doesn’t even count any dietary changes.
Any kind of activity is better than just sitting around—if you were previously sedentary, even 20 to 30 minutes of swimming allows you to burn calories you wouldn’t have before. See how this guy used swimming to help lose 115 pounds.
Does that mean swimming burns off belly fat?
Sort of. Swimming doesn’t preferentially burn belly fat, but if it’s something that you’ll do consistently because you enjoy it, then it will help you drop pounds all over, including you’re your belly.
How to torch calories by swimming
To torch more calories, either get in more frequently, swim longer each session, or swim at a higher intensity. There are benefits to each:
Swim more frequently
As with any exercise, the key to losing weight with it is to be consistent. Swim coaches talking with athletes who want to get stronger and faster encourage them to “swim less, more often.” You get more out of a swim when your technique is good. So getting in the water more frequently beats banging out a long session where you’re just fighting falling-apart technique at the end.
Also, unless you have a pool in your back yard, swimming requires a little planning—you have to get to the pool when it’s open, make sure you have your cap, goggles, towel and whatever else you need for the shower afterward. (Check out the best goggles here.) Make it easy for yourself and have your swim bag ready to go at all times, so you can spend less time looking for stuff and more time working out.
Swim longer
Once your technique stays in place for a whole workout, see if you can make one swim a week slightly longer than the others. This will not only allow you to burn more calories, it will improve your endurance so you can swim stronger for longer in future sessions and gradually extend your time in the pool.
Swim at a higher intensity
To burn more calories in less time, use an interval training approach. Instead of swimming the whole time at 65 or 70 percent of your max heart rate, break your workout into sets. There are a million different ways you can approach it. One way would be to try swimming 4 laps at 70 percent, 4 at 80, and 4 at 90, resting between each set of four. Then descend the ladder (4 at 90, 4 at 80, 4 at 70). You can find good swim workout suggestions all over the internet, but this tool from Swimming World Magazine lets you customize them to your fitness level and how long you want to swim.
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