Related Episodes for Which biomarkers does Tim Ferriss regularly track?

“Exercise choice changes the cost of that effort. Dr. Norton recommends leaving more repetitions in reserve on demanding compound lifts, where failure can sharply reduce later performance, while pushing lower-risk isolation exercises closer to failure.”

“A meta-analysis restricted to direct regional measures from MRI, CT, or ultrasound found a very small average hypertrophy benefit when creatine was combined with resistance training, with uncertainty around the pooled estimate and variation across sites and populations.”

“In one randomized crossover study of 15 healthy adults, a single dose of 0.35 grams per kilogram changed brain-energy measures and partially reduced deterioration on selected cognitive tasks during 21 hours without sleep.”

“In a four-month randomized trial of 88 overweight, untrained middle-aged adults, daily doses of 500 or 1,000 milligrams improved some muscle and mitochondrial measures, while the primary outcome of peak power did not significantly improve.”

“A separate study in inactive men found that both one four-minute interval and a full 4x4 session improved VO2 max after ten weeks, showing that meaningful adaptations can occur across different starting volumes.”