Another important factor in fat burning is exercise duration. Cardiovascular exercise is always encouraged to last at least 20 minutes and preferably 30 to 45 minutes for most people. The reason for this is that it seems to take a little time for all the needed events for optimal fat utilization to come on line. This includes everything from mobilizing fatty acids from fat stores to increasing the delivery of oxygen to working muscle. There are a few other biochemical reasons for this as well, but they are beyond the scope of this text. The important thing is that it takes a while, often 12 to 20 minutes, to reach optimal fat burning efficiency. So be patient and include a period of lower intensity warm-up as well.
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If you’re overweight, you are not a bad person. You’re simply overweight. But it’s important to lose the extra pounds so you’ll look good, feel healthier and develop a sense of pride and self-esteem. Once you’ve lost the fat, you’ll need to maintain your weight.