• Start in a plank position.
    Raise your arm out in front of you.
    Return to the starting position, then raise the opposing arm.
    Make sure to keep your hips stable. If you're unable to, try performing this exercise from the knees.
  • Start in a plank position, hands under shoulders, body straight.
    Jump feet wide, then back together, like a jumping jack.
    Keep core tight, maintain plank form, repeat for desired time or reps.
  • Grip bar, hang with arms extended, body straight.
    Engage core, lift knees towards chest.
    Lower legs back down, maintain controlled movement.
  • Grip bar, hang with arms extended, body straight.
    Engage core, lift knees towards chest.
    Hold that position for the specified amount of time.