Partner Sit-up with Feet Hold | Friends

Quick Intro

Partner Sit-up with Feet Hold is the sit-up most people remember from school. The working partner lies on their back with the knees bent. The holding partner kneels at their feet and holds the ankles or shins firmly to the floor. The working partner then does continuous sit-ups, using the held feet as a fixed point to pull against. After an agreed number of reps, the two swap.

The sit-up itself is covered at Sit-up. This guide covers the holding partner, whose job is an anchor: firm, still and never helping the sit-up along.

What You’ll Need

A mat or soft floor for the working partner’s back.
Room for the holding partner to kneel at their feet.

How It Works

The working partner lies on their back with the knees bent and the feet flat on the floor, about hip-width apart.
The holding partner kneels facing them, at their feet, and places both hands firmly over the tops of the ankles or the lower shins, pressing the feet into the floor.
The working partner crosses the arms over the chest or rests the fingertips lightly beside the head.
They curl up, lifting the head, then the shoulders, then the back, until the chest comes up toward the knees.
They lower back down the same way under control and repeat.
After the agreed number, the two swap places.

For the Holding Partner

Firm and still. Press the feet into the floor and keep them there. If the feet lift as the working partner comes up, the hold is too light.

Never pull. The holding partner does not lean back or tug on the ankles to help the working partner up. That turns the sit-up into a pull from the arms and takes the work away from the trunk.

Where to hold. Over the top of the ankles or the lower shins, hands flat. Kneeling on the feet is not a hold, and pressing on the toes is uncomfortable.

Watch the pace. If the working partner starts swinging up quickly, a quiet “slower” helps. Counting the reps out loud is a useful second job.

General rules for anchoring a partner are in Stretching, Resisting and Anchoring a Partner.

What the Partner Changes

Without anything holding the feet, many people find the feet lift as they sit up, and it becomes hard to come all the way up without a jerk. A held pair of feet gives a fixed point to pull against, so the whole range is easier to reach. That is the reason for the anchored version, and it is also why it uses the muscles at the front of the hips (the hip flexors) a little more than a sit-up with free feet.

How Many

Agree a number before you start, for example 10 to 20 for most people. Swap roles after each set. Two or three sets each is plenty.

Making It Easier or Harder

Easier: a shorter range, curling up only until the shoulder blades are well off the floor. Hands reaching toward the knees also makes it easier, and arms crossed over the chest sit between the two.
Harder: fingertips beside the head, a slow count on the way down or a short pause at the top.

Staying Safe

Keep it controlled. Held feet make it tempting to throw the body up with momentum. Curl up and lower down at a steady pace.
Do not pull on the head. If the hands are by the head, they rest there lightly.
Stop for strain in the lower back or neck.

Common Mistakes

Holding partner pulling. The anchor holds the feet down and nothing else.
Yanking the neck. The chin stays slightly tucked and the hands do not drag the head up.
Dropping back down. The way down is as slow as the way up.
Feet sliding away. Bend the knees enough that the feet stay flat, and keep the hold firm.

Getting Better Over Time

Count clean reps rather than total reps. A good aim is to add a couple of controlled sit-ups each week, or to slow the lowering, before adding more sets.

Fitting It Into a Session

It works as a core block in the middle of a session, or as part of a short circuit with squats and push-ups. Because roles swap every set, the holding partner gets a rest while the other works.

Crunch is a shorter curl with the lower back staying on the floor.
Partner Foot-Lock V-up uses the same anchor for a full V-up.
Sit-up Ball Pass turns the partner sit-up into a passing game.

FAQ

Is a sit-up with the feet held bad for the back?

For most people, controlled sit-ups are fine. Keep the pace steady and stop if the lower back hurts. People with back problems may prefer the crunch.

Why do the hip flexors feel it?

Holding the feet gives the hip flexors something to pull against, so they share the work with the stomach muscles. That is normal for this version.

Can I hook my feet under a bench instead?

Yes, if one is available. The partner hold is the classic version and needs no equipment.