Janda Sit-Up
The Janda Sit-Up isolates the Abdominals through a controlled range of motion. This beginner-level body only exercise builds focused strength where compound movements often fall short.
Starting position
Ending position
Muscles Worked
The abdominals handles the primary load during this movement. This isolation movement keeps tension concentrated on a single muscle group.
How to Janda Sit-Up
- 1
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.
- 2
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.
- 3
As you inhale, slowly go back in a controlled manner to the starting position.
- 4
Repeat for the recommended amount of repetitions.
Common Mistakes
- • Focus on the mind-muscle connection — feel the target muscle working through each rep.
- • Use a controlled tempo of 2 seconds up, 2 seconds down to eliminate momentum.
- • If reps become too easy, slow the tempo or add a pause at the hardest point rather than rushing through more reps.
- • Squeeze at peak contraction for a full second — this is where most of the growth stimulus occurs.
Similar Exercises
Frequently Asked Questions
What muscles does the Janda Sit-Up work?
The Janda Sit-Up primarily targets the Abdominals. It's an effective isolation exercise for building abdominals strength.
Is the Janda Sit-Up good for beginners?
Yes, the Janda Sit-Up is suitable for beginners. Start with light weight to master the 4-step form before adding load.
What equipment do I need for the Janda Sit-Up?
You need no equipment — just your bodyweight to perform the Janda Sit-Up. This makes it ideal for home workouts.
Track Your Progress
RepStack logs every set, calculates your e1RM, and coaches progressive overload — automatically.