In this Five-Minute Friday, Dr. Kay dives into the trending world of NAD (Nicotinamide Adenine Dinucleotide) and its powerful role in boosting your energy, metabolism, and overall cellular longevity. Learn about the various forms of NAD supplementation, from oral precursors like niacinamide for daily support and sublingual for quick boosts, to IV infusions for deep repletion. Dr. Kay also explores targeted delivery methods like intranasal NAD for brain support and intramuscular injections for accelerated recovery. Discover how optimizing your NAD levels can combat age-related fatigue and support healthy aging from within.