Justin Timberlake is not the only one bringing sexy back. Often the back is overlooked when exercising and that is just a darn shame. Below are some exercises to tone and sculpt to create a sexy back...

A. Balance on forearms and toes keeping head and neck in a straight line with back. Contract abs so belly doesn't sag toward floor, and tuck pelvis so butt doesn't stick up.

 

B. Raise right leg 6 to 12 inches, squeezing glutes. Hold for 3 to 5 seconds. Lower and repeat with left leg. Do 8 to 10 reps with each leg, maintaining plank position the entire time. 

Bonus benefit: For a flatter belly, tighten your abs while performing each exercise.

Kneel with hands positioned directly beneath shoulders and knees beneath hips. Keep head and neck in line with spine and abs tight. Simultaneously raise right arm straight out in front and left leg behind you.

 

Keeping arm and leg parallel to floor, press arm out to side as you pull leg forward, as shown. Hold for 3 to 5 seconds, then move arm and leg back and lower them. Repeat with opposite arm and leg. Do 8 to 10 reps on each side.

Prolonged sitting can cause stiffness in your lower back. Counteract it by practicing this stretch daily. Hug both knees to chest and raise head and shoulders off floor. Hold for 15 seconds, breathing deeply. Release and repeat.