I think you're supposed to do cardio for a minimum of 10 minutes at a time. And yes, short bouts of exercise are a great way to get fitness into your day when you don't have a lot of time.
10/6/11 7:41 A
your calorie burn may come out nearly the same but there are other effects of exercise that you'll miss out on if you break it up into small bits. there are hormones and endorphins that are released only after having exercised continuously for a period of time. there is also an "afterburn" affect that you get from exercise that probably won't happen after a short session.
Fitness Minutes: (66,181)
7,159 10/6/11 12:12 A
Doesn't matter- what matters to avoid senditary lifestyle mode is to move more in daily life in general.. Many people think I workout today, then dump down on the couch.. Reality check- wear a pedometer the optimal movement is 10,000 steps or 5km daily out over planned exercise..
I may not be able to get my heart rate up daily in the cardio zone- but the sheer point I am100% more active dumping my car, walking or biking to get around also long haul helps me to keep my weight steady state..
What I considered to be a active life for a mature women is alot more than most average people think.. To eat a normal 2000 calorie nutrition for a average women not on a diet I have to be active all the time using my feet..
Of course it would depend on the exercise, intensity, etc... But research is showing that you can break up your daily exercise into smaller clumps and still get great results. I often see recommedations for 3, 10-minutes clumps.