My husband is 86 yrs. old and always had to have a nap during the day UNTIL we started taking these superman pills. Now he works in the yard, feels much more energetic and stays up as late as midnight. I noticed the greatest difference when we did aerobic exercises. I am 67 and was able to exercise at maximum levels the entire time. Others commented on how intensive I was working. We both feel very different. This stuff works at the level of mitochondria where your body creates its energy. We lose this natural ingredient as we age and this restores it, allowing us to live like we were 30-40 years younger, and if it causes me to live this actively for less time, I'm thrilled and so is my husband. But I bet that with the new energy and exercise level, we will last longer, be healthier and enjoy our lives so much more. 100mg ActiveQ uses Kaneka QH Ubiquinol the "active" antioxidant form of Coenzyme Q10 which is closest to what our own body used to make, so you need alot less to do a whole lot more. Kaneka found a way to stabilize it. It's great for all of us who are babyboomers and want to stay active.