The most abundant element on Earth is oxygen, but the most abundant element in the entire universe is hydrogen. On Earth, oxygen makes up approximately 47 percent of the Earth's mass and is found both in Earth's atmosphere and crust. Continue Reading.
The definition of flexible is someone or something that bends easily, is easily persuaded or can be changed easily. 1  An example of flexible is a yoga expert. 2  An example of flexible is a work schedule that allows work to be done at any time during the day.
But the definition of flexibility is more complicated than simply being able to do a single stretch. According the the American Council on Exercise (ACE), flexibility is defined as the range of motion of a given joint or group of joints or the level of tissue extensibility that a muscle group possesses.