Sentence examples for flex your back from inspiring English sources

It will also cause your muscles to bunch up and become tight, so you'll probably want to flex your back muscles hard until the cramp "goes away" (which usually just takes a minute or two).

As long as you lift with proper form (see section below), avoid awkwardly hunching or flexing your back, and don't tense your back muscles during the exercise, you will be safe.

Your range of motion should improve the more you flex your neck back and forth.

Grab the hammer firmly with both hands, and stand with your feet shoulder-width apart, knees flexed, and your back straight.

Flex your abdominal and back (core) muscles.

There are car parks and access points all along the beach, and quite simply, if you're prepared to carry your snacks on your back and flex your calf muscles, seaside solitude will be your just reward.

Your knee should be flexed slightly, but your back and shoulders should remain very straight and balanced.

Flex your core muscles and lean back into the ball as you squat.

Also, lying on the stomach can be uncomfortable because lying on the stomach can cause strain in the low back by sagging.[7] Try a pillow or two under your stomach -- and, possibly, extending under chest -- to raise the torso to flex your hips and help relieve back strain.

Flex your stomach muscles and make sure your back is straight.

This is a good start to let your back flex naturally and prepare for the actual exercise.