I'm a 53 y/o fit and nutrition-conscious gal. I noticed after 2 weeks of taking 10 tablets daily, my deltoids finally started to tone up. Before that, my usual reps weren't doing anything. I really didn't want to accept that this was just part of my aging. I also now have plenty of energy and find myself skipping my favorite afternoon naps. I look forward to improving my bone density in many months to come, since my doc had said about 3 years ago that I have Osteopenia. I am now a month in and have cut back from 10 tablets a day to 5 though, just to make a bottle last longer. This product is a life changer!