maratoolJanda Sit-Up
How to do the janda sit-up
- Position your body on the floor in the basic sit-up position; knees to a ninety degree angle with feet flat on the floor and arms either crossed over your chest or to the sides. This will be your starting position.
- As you strongly tighten your glutes and hamstrings, fill your lungs with air and in a slow (three to six second count) ascent, slowly exhale. Tip: It is important to tighten the glutes and hamstrings as this will cause the hip flexors to be inactivated in a process called reciprocal inhibition, which basically means that opposite muscles to the contracted ones will relax.
- As you inhale, slowly go back in a controlled manner to the starting position.
- Repeat for the recommended amount of repetitions.
Muscles worked
The prime movers are the rectus abdominis and the obliques, which flex the trunk forward and resist it being pulled into extension or twisted out of line.
Every exercise for:Abdominals
How this movement works
One joint changes angle and the resistance travels toward you along a single arc. Nothing is positioned to help, so tension stays where you aimed it and the usable load drops sharply against a multi-joint pull for the same muscle. Protect the range of motion; buying weight by shortening the arc defeats the point.
It is filed under strength: produce force against resistance for a countable number of repetitions, and progress the resistance over time.
What you need
No equipment at all. The resistance is your own bodyweight, so you progress by changing leverage, range or tempo rather than by adding plates — and you can do it anywhere.
Every exercise using:Body only
These train the abdominals too, using equipment this one does not:
- Kettlebell Figure 8kettlebell
- Kneeling Cable Crunch With Alternating Oblique Twistscable
- Landmine 180'sbarbell
- Medicine Ball Full Twistmedicine ball
- Side Bend with Dumbbelldumbbell
Difficulty
Listed at beginner level: the pattern is simple enough to pick up without coaching, and a position that goes wrong mid-set is obvious enough to correct on the next repetition.
Of the 97 abdominals exercises in this database, 69 are listed at beginner level.
Photos: free-exercise-db — public domain (Unlicense) Full attribution →
ⓘ Informational only — not a substitute for professional fitness or medical advice.