I've been thin all my life, so why do I need to exercise?
Just because you're naturally thin doesn't mean you're fit. Next time you see a parade of models on the runway, look carefully. They may be ultra skinny, but surprisingly large number is flabby, with gooshy, hanging behinds. Not very attractive. And not very healthy, either. Everyone needs to exercise, no matter what your body type. Couch potatoes, even thin ones, are more than three times more likely to die from heart disease and cancer than people who are moderately fit.
Will eating before I work out give me an extra burst of energy?
No. In fact, it'll probably make your workout harder and make you feel worse. When you eat sugar, it quickly goes into your bloodstream and stimulates insulin - a quick rush. And then it goes down just as quickly, making you feel tired and weak. The best thing to eat for sustained energy is some form of complex carbohydrate - an apple or half a bagel - no more than two hours before your workout.
Is a quick, hard workout better than a long, slow one?
No, it's counterproductive. Your goal is to burn fat. When exercise strenuously, yes, you'll burn more calories, but they'll be from the accessible carbohydrates in your body and from fat. Slow and steady wins the race.
If I exercise like a maniac, will I get superfit right away?
No, you'll probably get hurt. The most common mistake is trying to do too much too soon. This is when injuries happen and frustration follows. It's too tempting to give up when you've twisted an ankle or pulled a muscle. You must start out slowly, and when the level you're at seems too easy, then take it up a notch. If you're walking, then all this means is walking a little faster. That way your workout doesn't take more time but is more efficient.
If it is hot, is it safe to exercise?
Yes, but you must always hydrate yourself by drinking lots of water before, during and after exercise. The human body has a wonderful efficient way of acclimating to heat, as long as you exercise regularly. As temperature gradually rise, your sweating mechanism become more proficient. Of course it's always best to exercise early in the day or at dusk, when temperatures are cooling. Try not to exercise outside on days when pollution is terrible or it's hotter than 32'C, or you could put yourself at risk for dehydration and heat stroke.
If I exercise all the time, can I eat anything whatever I want?
Sorry. Even if your exercise session was fat burning, eating two doughnuts and a pint of ice cream afterwards is still going to put that new fat right back into your bloodstream.
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