I have been working out with Cathe videos for quite some time and have the STS series. I am on my 5th time with the STS and still do not feel like my arms are where I want them to be (not quite seeing the "cap"). I have been researching supplements (I take whey protein only after my weight workouts, I was drinking 1 shake before and 1 after but my Dr. advised me to cut down to 1) and I keep reading about creatine to help with endurance and building muscle. I have found a product called Femme Advantage Creatine Serum and was wondering if anybody has tried this and if it helped. I do watch what I eat, eat 4-5 meals/snacks a day that include protein and carbs & drink alot of water and I am just frustrated that I am not seeing the definition in my arms like I think I should. I am 46 and have high blood pressure (hereditary) and just want to know if anybody has any suggestions if creatine is not the healthy choice because of high blood pressure. Any suggestions would be greatly appreciated!!