Aerobic fitness increases the amount of oxygen that is delivered to your muscles, which allows them to work longer. Any activity that raises your heart rate and keeps it up for an extended period of time will improve your aerobic fitness.
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Flat stomach, tight abs — we all dream about it. Here’s how to get them, with step-by-step instructions.
“How do I get a flat stomach?” Fitness trainers hear this question more than any other.
“To get defined abs, it’s going to take work,” says exercise physiologist Kelli Calabrese. “A lean midsection takes a combination of good nutrition, cardiovascular conditioning, and abdominal training. Those who see the best results combine all three.”