Weight loss comes down to simple math. Gradually increase the amount of time you can contract and hold your abs. Aerobic activity strengthens the heart and improves the body's ability to deliver oxygen to all its cells. For specific medical advice, diagnoses, and treatment, consult your doctor. Sit upright and breathe deeply, drawing air from the diaphragm upward. Parents should encourage their kids to do a variety of activities so that they can work on all three elements.
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They found no difference in appetite between groups (8). Overall, I looked at 4 more studies. Two of them showed weight loss of a few pounds over a period of 8 weeks (9, 10), but the other two showed no effect (11, 12).