The Otis-up is a weighted exercise focusing on the abdominal muscles, as well as the shoulders to a lesser degree. It primarily targets the rectus abdominus or “six-pack” muscles, but also involves the obliques and deep core muscles. It is normally performed on a decline bench holding a weight plate, but can also be performed with a dumbbell, kettlebell, or other weight.


  1. Allows you to train in lower rep ranges when bodyweight decline sit-ups get easy
  2. Weighted ab training can help the core muscles grow and look more defined
  3. Also challenges the shoulders, serratus anterior, upper back, and hip flexors

Otis-Up Images


Otis-Up Instructions

Otis-Up muscle diagram
  1. Secure your feet and lay back on the floor. Your knees should be bent. Hold a weight with both hands to your chest. This will be your starting position.
  2. Initiate the movement by flexing the hips and spine to raise your torso up from the ground.
  3. As you move up, press the weight up so that it is above your head at the top of the movement.
  4. Return the weight to your chest as you reverse the sit-up motion, ensuring not to go all the way down to the floor.