A few days in after starting NAD+ recommended to me by my Dr. I thought to myself “I feel 20 years younger”! It crept up on me and has stayed with me ever since. Feeling like you are 40 when you are 63 is completely life changing. I went skiing for the first time after using NAD for 3 weeks, 5 hours a day 5 days in a row and felt hardly any aches and pains it was astonishing. I am averagely fit certainly no athlete. Memory, motivation, energy, cognitive function, feeling of well being are all elevated. Try it, you have nothing to lose…and everything to gain.