Abdominal Exercise
Abdominal exercises are those that affect the abdominal muscles (colloquially known as the stomach muscles or "abs").
Read more about Abdominal Exercise: Usage, Breakdowns, Types of Abdominal Exercises and Effectiveness, Safety of Abdominal Exercises
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“As long as the reason of man continues fallible, and he is at liberty to exercise it, different opinions will be formed.”
—James Madison (1751–1836)