Exercise Profile
  • Target Muscle Group
  • Exercise TypeStrength
  • Equipment RequiredBodyweight
  • MechanicsCompound
  • Force TypePull (Bilateral)
  • Experience LevelBeginner
  • Secondary Muscles
Target Muscle Group


Abs Muscle Anatomy Diagram

Lying Floor Knee Tuck Overview

The lying floor knee tuck is a variation of the abdominal crunch and an exercise used to isolate the muscles of the abdomen.

The lying floor knee tuck is a flexion based exercise which keeps the lower abdominal muscles under constant tension during the entire range of motion.

Lying Floor Knee Tuck Instructions

  1. Lay supine in a relaxed position with your legs straight and your hands underneath your low back for support.
  2. Raise the knees toward your forehead while contracting your abdominals and exhaling.
  3. Once your abs are fully contracted and your knees are slightly above parallel, slowly lower your legs back to the starting position.
  4. Complete for the assigned number of repetitions.

Lying Floor Knee Tuck Tips

  1. Exhale hard like you’re blowing out candles on a cake and hold the contraction for a second in order to improve mind muscle connection.
  2. If your lower back bothers you during this exercise, choose more anti extension and anti rotation based movements.
  3. Avoid putting the hands behind the head as this can lead to excess strain upon the neck.
Posted on: Tue, 01/31/2023 - 09:56

This website is awesome and I will continue to use it

Posted on: Mon, 01/14/2013 - 19:20

Ah, helpful information. I was not keeping my knees together.

Posted on: Fri, 03/23/2012 - 09:20

Not every kind of xeircese burns fat. Each kind of xeircese has a different effect. For example, there's a precise way to do aerobic / cardio xeircese so that you're sure you're burning the extra fat in your body and not just the sugar in your blood. If you want to be a perfectionist ask someone who studies sports sciences or medicine for more details.

Posted on: Mon, 05/02/2016 - 10:57

Can you provide more information on this? I do to know anyone to ask, but I NEED to know I am getting the most fat burning possible out of my work outs. I am a beginner - have been going to the gym for about 5 months now, the first 3 months I went 5 days a week and the last two I have been going three times a week. Although I have developed tendinitis in my left shoulder and I start therapy next week. This only increases my need to burn as much fat as possible while doing cardio or any other exercise!