The data for the efficacy of NR and NMN as a tool to boost longevity is nonexistent at this point in time ... The interventions testing program at the NIH... unequivocally showed that NR did not work. So, if there are benefits to NR and NMN, we haven't seen them yet. And I would argue that if they do exist, they're not going to be that big. They're certainly not going to be on the order of what we see with exercise.