November 27, 2025, 4:04 pm | Read time: 6 minutes
For FITBOOK, yoga instructor Nina Ponath conducted a special self-test: wall sit every day for 14 days. She reveals how much willpower she needed to persevere and what the daily wall sit did to her body.
Suppose it were the last evening of my vacation, and I didn’t want to let go, wanting to hold onto time and experience it as intensely as possible–I would probably do a wall sit. In hardly any other exercise does time pass so agonizingly slowly and yet so intensely. Leaning against the wall for a minute can feel like an eternity and have surprisingly significant effects. The wall sit, an exercise we encountered in school sports, may look unspectacular, but it feels all the more intense: the thighs burn, the legs tremble, and you just want it to end. Well, I had resolved to endure the wall sit daily for 14 days–so I certainly didn’t want to give up!
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How to Do the Exercise Correctly
The wall sit is a form of isometric training where the muscles are under tension, but the joints do not move. This makes the exercise effective not only for the muscles but also for the tendons and joints. However, correct execution is crucial to unlock its full potential.
For the wall sit, position yourself with your back against a wall. The legs should be set at a 90-degree angle. It’s important that the back is completely fixed against the wall and no arch forms. Tilt the pelvis forward and pull the navel inward. Arms hang loosely beside the body and do not rest on the legs. To endure as long as possible, breathe slowly and controlled. Inhale slowly through the nose and exhale slowly through the mouth.
These Muscles Work During the Wall Sit
- Quadriceps: The thigh muscle is most stressed as it supports the entire body weight.
- Gluteal muscles (Glutes): They support the quadriceps and stabilize the hips.
- Hamstrings: They act as antagonists to the quadriceps and help with stabilization.
- Calf muscles (Soleus): They are isometrically tensed to maintain the position.
Additionally, secondary muscle groups also play an important role. The core muscles are constantly tensed to keep the back straight against the wall. The muscles in the lower back are also activated.
30-Day Wall Sit Challenge: Strengthen Your Thighs and Willpower
Why the Wall Sit Is an Underrated Exercise
The Role of Willpower: Training for the Mind
According to personal trainer and FITBOOK author Alina Bock, a wall sit challenge trains not only the body but also willpower. I find this plausible because isometric exercises involve no movement and thus little distraction. You are fully focused on yourself and fully aware of the effort. I value such mental training and now feel even more motivated to go to the wall daily.
My 14-Day Self-Experiment: From Burning to a Broad Grin
Trainer Alina Bock divided her plan for the wall sit challenge into three phases. For me, there are only phases 1 and 2 during this experiment, consisting of week 1, where the basics are established, and week 2, where the duration is extended.
In the first week, the expert recommends doing the wall sit every day with a duration of 30 to 45 seconds and a total of two sets. In the second week, on the first day, you should complete three sets with a duration of 45 seconds and a 45-second break between sets. On the second training day, there are also three sets on the plan. In the first set, aim for a duration of 60 seconds. In the following sets, hold for 45 seconds each. On the third training day, there are three sets on the plan, with the first two sets lasting 60 seconds and the third set 45 seconds. On the last training day of the week, the goal is to hold all three sets for 60 seconds. I hope I can do it!
Day 1: A Minute That Hurts
I start my challenge after running. Not a good idea, as I realize after just 20 seconds. An intense, barely controllable tremor goes through my thighs, and I decide that it doesn’t have to be half a minute of wall sit right from the start, let alone two sets. You have to give yourself room to grow.
Days 2 to 4: I Trick Myself
I’ve learned: I only do wall sits when I’m somewhat rested and not after running. To avoid focusing too much on the time, I do small tasks for distraction during the exercise. Brushing teeth, recording voice notes, reading emails–all in the wall sit. It distracts, at least a little. With these mental tricks, I easily increase to two sets of 45 seconds each. The muscle soreness is surprisingly manageable.
Days 5 and 6: Now It Gets Interesting
Two sets of 45 seconds don’t feel so bad. My quadriceps work steadily, even in other exercises. I especially feel my glutes more. I notice when I tense them deliberately, and I didn’t have this body awareness before.
Day 7: A Minor Setback
Today, I let my mental distractions slide and add the wall sit to an 8-kilometer run. Bad idea. My legs clearly remind me that recovery has been a bit neglected this week. I accept the gracious excuse from my inner slacker and stop after a 30-second set for today.
Days 8 to 10: A Matter of Will
My will is a bit weak these days. Since I’m on vacation in Austria and my legs are already heavily used from hiking, I need a little boost. I listen to podcasts while leaning against the wall with trembling legs and end my morning shower with a cold splash over my legs. I hold the first set as planned for 60 seconds, and the following two for 45 seconds each. I use the short breaks to catch my breath, relax the muscles, and mentally prepare for the next set. It doesn’t make it easier, but I notice how my will grows during the breaks. Physically, not much changes visibly, but I feel more stable and a bit proud of myself.
Days 11 to 13: I Grow in Length
Not literally, but my sense of body tension changes. I sit more upright, even in everyday life. My core muscles are alert, and my body holds two sets of 60 seconds effortlessly. The last set of 45 seconds now feels really easy. How much of life seems to be a matter of mindset.
Day 14: Three Minutes and a Broad Grin
Finale! I lean against the wall, sit deep, and start the timer. Three sets, each 60 seconds long, where I give it my all. I’m accompanied by the Kaulitz Brothers, who provide distraction. When I straighten my trembling knees after the last set, I mentally pat myself on the back. Now I’ve earned a break from the wall sit!