AB JACKKNIFE: core, legs, and arms
Equipment needed: exercise mat
Reps: 15
  • Lie on your back, with arms extended above your head and feet stretched out fully.
  • Lift arms and leg simultaneously, so that, fingertips (nearly) touch legs. 
  • Keep ab muscles tight throughout the exercise, both to start the action and in lowering back to starting position. 
AB WALK-UPS
Equipment needed: exercise mat
Reps: 15
  • Lie on your back with one knee bent and one leg extended out, at a 45 degree angle to the floor.
  • Use abs to lift torso off the floor, softly touching (but not holding onto) the thigh of extended leg.
  • Continuing to flex abs, slowing lower torso back to starting position.
  • Repeat on other leg.
  • Repeat 10- 15 reps on each leg.
FROG CRUNCHES
Equipment Needed: Exercise mat
Reps: 20-25
  • Begin sitting, balanced just behind your sits bones, rock back slightly to lift your feet off the floor; gently pull your knees to your chest.
  • Exhale, pull your navel to your spine, and lean back slightly as you open your arms to the sides and straighten your legs.
  • Inhale and return to the starting position to complete one rep.
AB TWIST
Equipment Needed: exercise mat, dumbbell
Reps: 30 (15 to each side)
  • Sit with knees bent and hold a dumbbell in front of your chest, elbows pointed out.
  • Lift your feet and lean back 45 degrees (back straight).
  • Rotate to the right and lower the weight toward the floor. Immediately repeat to the left. 
  • Complete 30 reps (15 to each side)
AB OBLIQUE RAISES
Equipment Needed: exercise mat
Reps: 15
  • Lie on your side with legs extended but angled (in a slight V position with your body) and stacked on top of each other.
  • Place bottom arm in front of you and place top hand behind your ear, with elbow pointed toward the ceiling.
  • Keeping abs tight, exhale to lift torso and legs together. Your body should be in a slight V position.
  • Inhale and slowly lower torso and legs back to start.
  • Complete 15 reps.