Ideally, transients that would cause very high positive voltages on one push-pull plate would cause high negative voltages on the other plate, and the diodes on the negative going plate would clamp the voltages on the positive going plate through the output transformer. How long do tubes last?
All of these studies are so-called randomized controlled trials, which are the gold standard of scientific experiments in humans.
The biggest of the studies included 135 overweight individuals, which were split into two groups (7): Treatment group: 1 gram of Garcinia Cambogia Extract, 3 times per day, taken 30 minutes before meals.
Placebo group: The other group took dummy pills (placebo). Both groups also went on a high-fiber, low calorie diet.