I think it is
Weakening of the bone
It will increase your life expectancy because you will be strengthing the heart, and reduce the risk of obesity, or a heart attack.
Answer:
25 percent means one fourth. To calculate 25 percent of a number, simply divide it by 4. For example, 25 percent of 12 is 12 divided by 4, or 3. 10 percent means one tenth.
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