1.   At the same time, it was beginning to flex its muscles on the world stage.

2.   Harold was flexing his muscles for the perfect balance, teeth bared, knife poised over his head.

3.   He seized a horrible pair of forceps and I closed my eyes as he started flexing his muscles.

4.   He was lifting weights and flexing his muscles.

5.   If you want to be an entrepreneur, you have to flex your muscles.

6.   Like Querelle, men in tatty soiled uniforms are flexing their muscles, while others stare vacantly into the middle distance.

7.   Soldiers, who previously had lacked social status, were now flexing their muscles because the military ran the country.

8.   This new position should give you the chance to really flex your muscles.

9.   The Fair Trade Commission has of late been flexing its muscles, cracking down on cases of corruption.

10.   He slowly flexed his muscles and tried to stand.