Recent studies show that electrostimulation increases the secretion of hGH (human Growth Hormone) more than exercise and supplements: GH responses to two consecutive bouts of neuromuscular electrical stimulation in healthy adults - Eur J Endocrinol; Mar 2008 - Sartorio et al. Talk to a doctor and ask if hGH interacts with progesterone or any other hormone involved with the timing of the menstrual cycle. Report what you find in here please, I’m interested in what you find.