Don't bend over to pick up objects or arch your back.
It's also important not to over arch your back.
Reach both hands up tall and arch your back.
Then, bend your knees and arch your back.
Be sure never to extend past your range of flexibility, and never arch your back to help yourself lift the weights.
Asegúrate de nunca extenderte más allá de tu rango de flexibilidad y nunca arquear tu espalda para ayudarte a sostener las pesas.
Although women typically don't show until months into your pregnancy, you might arch your back a little to make your stomach look a little more rounded.
Aunque a las mujeres normalmente no se les nota hasta después de algunos meses de embarazo, puedes arquear tu espalda para que el estómago se vea mucho más redondo.
You will need to arch your back and remain very still.
Deberá arquear la espalda y quedarse muy quieta.
Breathing deeply, arch your back like a cat.
Respira profundamente, y arquea la espalda como un gato.
Maintain proper posture and don't arch your back.
Mantenga una postura correcta y no arquee la espalda.
Others cause problems when you arch your back.
Otras causan problemas al arquear la espalda.
Lie down on your stomach, being careful not to arch your back.
Acuéstese boca abajo, cuidando de no arquear la espalda.
Raise your head, look up, and arch your back.
Levanta la cabeza, mira hacia arriba, y arquee la espalda.
Roll your shoulders up to your ears and arch your back.
Lleva los hombros hasta las orejas y arquea la espalda.