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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“He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one.”
—Henry David Thoreau (18171862)