«It's like you're trying to pike upward, except your glutes stay contracted [
which keeps your body in a straight line],» according to Bret Contreras, C.S.C.S. and author of Bodyweight Strength Training Anatomy.
From here, you'll do a push up, engaging that right oblique to
keep your body in a straight line as you lower the chest towards the ground and then press up, straightening your arms.
Contract abs to
keep your body in a straight line and spine parallel to the floor.
Keep your body in a straight line.
Ensure
you keep your body in a straight line for the whole set.
Make sure to
keep your body in a straight line while completing the movement; do not «break» at the waist.
Place your hands slightly wider than shoulder width, directly under the shoulders, and
keep your body in a straight line.
You then contract your abs,
keeping your body in a straight line.
Walk your feet down a bit (you can play with the angle til you find the spot that gives you the right amount of tension to perform 10 - 12 reps) and
keep your body in a straight line, core engaged, legs straight.
Lean away,
keeping your body in a straight line — mimicing a plank position standing, with your core engaged.
As you rotate your body, reach straight up or over your head with your left arm,
keeping your body in a straight line (your left foot stacked on top of your right to create this line), contracting your abs and pushing through the palm of the hand that is on the ground.
Keep looking forward and
keep your body in a straight line.
Keeping your body in a straight line, row yourself up until your back is fully contracted and hold for time.
Keep your body in a straight line and lean straight over to the side.
Engage your core, your glutes and your legs during the movement to
keep your body in a straight line.
Grip the bar with an overhand grip, hands about shoulder width apart, get under the bar and
keep your body in a straight line, with your heels resting on the ground, feet together.
Keep you body in a straight line.
In this variation, you'll still want to
keep your body in a straight line (from your head through your knees).
Then, be sure to
keep the body in a straight line the entire time while you push back up (c).
Just like in the other exercise,
keep your body in a straight line.
Tense every muscle to
keep your body in a straight line from your head to your heels.
Keep your body in a straight line, and pull in your abs to stabilize your spine.
Then, while
keeping your body in a straight line, slowly roll your elbows forwards a few inches.
Place your elbows on the Bosu ball and
keep your body in a straight line.
Keep your body in a straight line as you lunge back.
Keep your body in a straight line and crunch up towards the ceiling.
To perform more advanced movements, move the ball in the pattern of an 8 while
keeping the body in a straight line and the core engaged.
Keep the body in a straight line from head to toe.
Keeping your body in a straight line, do a push - up, then hop your feet forward so you land in a squat (c).