Fitness trainer Dan Go, at 46 years old, emphasizes the importance of daily nutritional supplements for maintaining health and energy. He recommends eight key supplements: 1) Creatine Monohydrate for muscle strength and cognitive function, taken at 10-15 grams daily; 2) Vitamin D3 + K2 for immunity and bone health, with a dosage of 6000 IU of D3 and 100 mcg of K2; 3) Omega-3 Fish Oil for brain health, at 2-3 grams daily; 4) Psyllium Husk for gut health, taken at 5 grams; 5) Magnesium Glycinate for sleep quality, at 400 mg before bed; 6) L-Theanine for anxiety reduction, at 200-400 mg with morning coffee; 7) CoQ10 for energy production, at 200 mg with meals; and 8) Whey Protein to meet protein targets, aiming for 0.8 to 1 gram per pound of body weight. Go stresses consistency over complexity in supplement intake, recommending consultation with a healthcare provider before starting any new regimen.