'Soleus pushup' fuels metabolism for hours while sitting

Curious if anyone here had additional context around this. Do calf raises have a similar effect? Do people with a habit of bouncing their calves while seated (essentially a soleus pushup as described in the article) have higher metabolisms on average?

It makes sense that a part of a calf muscle could have exceptional endurance, given the importance of walking in humans, but the article seems to say walking doesn't use it enough to activate the same effect. Maybe running?

The article makes some big claims and it would be interesting to see an independent review.

I don't understand the physical motion. Simply raising the heel whilst sitting?

This is just leg bouncing right? Like sitting in a chair and moving your leg up and down? The thing that people yell at you for because it's annoying and rumbles the table and the car and the chairs?

edit: yes it is. it's shown in the first ten seconds of the video.

> Instead of breaking down glycogen, the soleus can use other types of fuels such as blood glucose and fats. Glycogen is normally the predominant type of carbohydrate that fuels muscular exercise.

> When the SPU was tested, the whole-body effects on blood chemistry included a 52% improvement in the excursion of blood glucose (sugar) and 60% less insulin requirement over three hours after ingesting a glucose drink.

That's amazing if it is true.