How often should I implement flexibility exercises into my training schedule

When you wear your earbuds while working out, your sweat damages them and they die sooner

Matt is writing a literary analysis essay on shakespeare's use of foreshadowing in act 1 scene 1 of richard 3. which lines in this excerpt from that scene can he use as textual evidence in his essay?

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.