Well supported
Sitting for a long time makes your muscles not work, so your body releases more insulin to control your blood sugar.
Strong evidence supports this claim and little argues against it.
3 studies
Video analysis · Siim Land
Soleus push-ups may improve blood sugar, but evidence is preliminary
While some claims about the soleus muscle's role in metabolism are supported by clinical trials, many specific details lack robust evidence.
In short
Do soleus push-ups while sitting to improve blood sugar and circulation, without needing to stand.
Worth a watch?With caveats
The video claims some well-supported benefits, but key assertions about exact percentages and optimal performance lack robust evidence. Based on our research, the evidence is mixed: several claims have strong support (scores above 50), but others have no supporting studies (scores of 0). Therefore, viewers should approach the information with caution and not rely solely on it for medical decisions.
Our breakdown of the video
We checked the science
10 claims from the video, each with how well the evidence supports or refutes it.
Well supported
When you stand still without moving your leg muscles, gravity pulls blood down into your legs. This makes it harder for your body to send the blood back to your heart and move it around your body.
Strong evidence supports this claim and little argues against it.
1 study
Weakly supported
The soleus muscle in your lower leg tightens and squeezes the veins nearby, which helps push blood back up to your heart.
The evidence supports this claim, but it is not high-grade.
3 studies
Not enough evidence yet
The soleus muscle, located in the calf, is composed mostly of 'slow-twitch' muscle fibers. These fibers contract slowly but are very efficient and do not tire easily, allowing the soleus to sustain activity for long periods without fatigue.
Not enough evidence on either side yet.
Weakly supported
Doing a leg exercise while sitting down, which works a muscle in your calf, lowers the amount of sugar and insulin in your blood after you eat by about half in healthy people.
The evidence supports this claim, but it is not high-grade.
1 study
Weakly supported
When your muscles contract during activity, they need extra energy, so they take in more sugar from your blood. The contraction activates a special protein that helps bring the sugar into the muscle cells.
The evidence supports this claim, but it is not high-grade.
2 studies
Weakly supported
The soleus muscle, found in the calf, uses about three times more energy when it moves (dynamic contraction) compared to when it stays still while contracted (isometric hold).
The evidence supports this claim, but it is not high-grade.
1 study
Not enough evidence yet
The soleus is a muscle in your lower leg. This claim says that when you do the soleus push-up exercise, you should do about 100 squeezes per minute for the best results.
Not enough evidence on either side yet.
Weakly supported
The soleus push-up is an exercise that keeps your leg muscles working hard, which helps control blood sugar. It works better than walking because walking becomes easier for your body over time, so it doesn't demand as much energy.
The evidence supports this claim, but it is not high-grade.
2 studies
Weakly supported
People who walk more each day, going from about 2,000 steps to about 8,700 steps, have a 60% lower chance of dying from any cause.
The evidence supports this claim, but it is not high-grade.
3 studies
0:00
7:44
Weakly supported
Key takeaways
What the video claims
Summary
Based on the video transcript only without verifying against science.
- 01
Valid: Muscle contractions activate GLUT4, which pulls glucose from blood; the soleus can contract for long periods.
- 02
Off: The claimed 52% blood sugar and 60% insulin reductions are based on a single study and haven't been replicated.
- 03
Interesting: The soleus push-up may outperform walking for blood sugar because walking becomes energy-efficient, reducing its metabolic effect.
- 04
Bottom line: Do soleus push-ups while seated for extended periods to improve blood sugar and circulation, but still aim for regular walking and exercise.
Detailed report
The full report
The same claims written out: what the video argues, what to check before acting on it, and how to apply it.
Editorial assessment
Soleus Push-Ups Lower Blood Sugar and Insulin While Seated
Soleus push-ups may improve blood sugar, but evidence is preliminary
Original: Your Second Heart Is Destroying Your Metabolism
In short
While some claims about the soleus muscle's role in metabolism are supported by clinical trials, many specific details lack robust evidence.
Overview
The 'second heart' is the soleus muscle. When you sit for long periods, your soleus becomes inactive, impairing blood sugar regulation and circulation. The video reveals that performing soleus push-ups (seated calf raises) can reduce post-meal blood sugar by 52% and insulin response by 60%, effectively counteracting the metabolic damage of sitting.
Worth A Watch?
WITH CAVEATS
The video claims some well-supported benefits, but key assertions about exact percentages and optimal performance lack robust evidence. Based on our research, the evidence is mixed: several claims have strong support (scores above 50), but others have no supporting studies (scores of 0). Therefore, viewers should approach the information with caution and not rely solely on it for medical decisions.
The full write-up
The video explains that the soleus muscle, located under the calf, is called the 'second heart' because it pumps blood back to the heart. Inactivity of this muscle due to prolonged sitting contributes to poor blood sugar control and circulation. A 2022 University of Houston study found that performing seated soleus push-ups after meals reduced post-meal blood sugar by 52% and insulin response by 60%. The mechanism involves muscle contraction activating GLUT4 transporters, which pull glucose from the bloodstream. The soleus is highly fatigue-resistant, allowing continuous contraction. The video provides instructions for proper technique: sit with feet flat, toes forward, press the front of the foot down, lift only the heel, and lower, at a rate of about 100 contractions per minute. It also notes that soleus push-ups may be more effective for blood sugar regulation than walking because walking becomes more energy-efficient over time. Walking is still recommended, with a 2023 meta-analysis showing a 60% reduction in all-cause mortality when increasing from ~2,000 to ~8,700 steps per day.
Worth a watch?
With caveats
The video claims some well-supported benefits, but key assertions about exact percentages and optimal performance lack robust evidence. Based on our research, the evidence is mixed: several claims have strong support (scores above 50), but others have no supporting studies (scores of 0). Therefore, viewers should approach the information with caution and not rely solely on it for medical decisions.
What the video projects
Consistently doing soleus push-ups while sitting may reduce post-meal blood sugar spikes and insulin demand, improve circulation, and counteract some negative effects of sedentary time. Based on the study, users may see a 52% reduction in blood sugar and 60% reduction in insulin response after meals, though individual results may vary.
The video's own numbers and outcomes, as stated.
Scoring key
How to read a score
Well supported
A high score for and a low score against. High-grade evidence backs the claim and little of weight argues with it, so it stands well supported.
Science is divided
Similar scores on both sides. Evidence of comparable grade sits for and against, so science is divided on the claim.
Well refuted
A high score against and a low score for. High-grade evidence argues with the claim and little backs it, so it stands well refuted.
Not enough evidence yet
A low score on both sides. Little evidence of any grade exists either way, so the claim cannot be judged either way.
A score is the GRADE of the best evidence on that side, not the quality of the work: meta-analyses and randomized human trials grade highest, observational studies lower, animal and laboratory studies lower still. Higher grade means that side of the evidence carries more weight in the verdict; a lower score is lower-grade evidence that says less. Every claim is scored on both sides, so a verdict always weighs evidence for and evidence against — never a single score. A lead that never reaches high grade reads as Weakly supported or Weakly refuted: the evidence leans one way, but it is not strong enough to settle the claim either way.
Study design behind the 10 claims on this page
Randomized trials4Observational1Mixed evidence3Design unclear2