Losing weight fast without dieting can seem like a difficult challenge. However, there are a few exercises that burn calories so steadily and quickly, that altering your diet may not be necessary to lose weight as long as you are already eating a healthy, balanced diet. Many of these exercises also allow you to get out and see the sights or compete in a fun, challenging activity.
Running
Whether you prefer running indoors on the treadmill or in a rural or city setting, running is one of the best ways to lose weight without dieting. Long distance runners burn an incredible amount of calories, and even running shorter distances--less than two miles--can burn hundreds of calories per day with a fairly minimal time investment.
Swimming
According to ShapeFit.com, doing the breast stroke for 30 minutes can help you burn up to 400 calories. Swimming can also help build muscle and strength, as it is a total body workout.
Cross-Country Skiing
Cross-country skiing is a full body workout that can burn a significant amount of calories in a very short period of time. Whether you choose to do your cross-country skiing inside on a machine at the gym or outside in the great outdoors, cross-country skiing can help you drop weight in a hurry without going on a diet.
Sprinting
Sprinting is a wonderful exercise for those that want to lose weight, as it burns a huge amount of calories while you are doing it, and it can help keep your metabolic rate up several days after exercising, helping to you to burn even more calories. Jogging between sprints can help increase the amount of calories you burn in a shorter amount of time.
Basketball
According to HealthDiscovery.net, a 150-lb. person can burn more than 500 calories during 60 minutes of competitive basketball. Playing basketball is also a fun way to lose weight if you don't enjoy traditional exercises like running on the treadmill, as it keeps your mind focused on the game and not the actual exercise.
Rock Climbing
Indoor rock climbing is becoming more and more popular in gyms and fitness centers, and it is a wonderful, fun way to burn a large amount of calories in a short time. Of course, you can always join a rock climbing group or pay an experienced guide if you would prefer to do your exercise outdoors.
Rollerblading
According to the Mayo Clinic, a 160-lb. individual can burn 913 calories in one hour, making it an incredible exercise for weight loss, considering that you lose 1 lb. for every 3,500 calories burned. As an added bonus, many cities have outdoor tracks surrounding scenic areas built especially for bicyclists and those on roller skates or rollerblades.



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