I watched a Japanese TV program recently about slow squats as an exercise for lowering blood sugar and burning fat.
They say that a series of 10 sec squats in reps of 10 repeated 3 times per session then done in two sessions a week for three months can reduce blood sugar levels as a treatment for diabeties and leads to weight loss.
The explanation is that slow reps change fast twitch white muscle by increasing the number of mitochondria in the muscle – the muscle turns pink and burns much more energy.
See here https://www3.nhk.or.jp/nhkworld/en/special/episode/201903160810/
It’s a bit like Chi Kung exercises – I have been doing it for a couple of weeks and my legs and knees are feeling much better, and actually it is not too hard work.