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Exercise....or by just living.... here are some ways....
Hike for 45 mins. Jump rope for 30 mins. Walk for 1 and 1/2 hours Play flag football for 45 mins. Stand and talk with someone for 4...
You will need a good calorie and exercise counter, but you can run or bike for 30 minutes. as long as you get the heart pumping. instead, a lot of people find walking a great and easier way to get...
Well in order to burn 300 calories, run for at least 30 min. About ten min of steady running burns 100 calories. So in no time, you will be in shape and the envy of everyone.
Typically a combination of walking/running will burn around 10 calories per minute or about 600 per hour (60min). I'd say if you ran for 20 minutes, you'd be right at 300 calories.