Zone 2 Training Research

Exercise, Sleep, and Insomnia: Evidence for Endurance Athletes A 2026 meta-analysis of 42 clinical trials confirms exercise can improve sleep quality

Low-Load, High-Speed Training Outperformed Moderate-Load Work for Junior Swimmers Two strength training programs using different weights but the same sp…

Taurine and Betaine Enhance Hepatic Lactate Clearance in Canine Study For endurance cyclists, lactate is more than a simple marker of muscle burn

Stress Reduction Adds Telomeres: A New Study in Nurses Telomeres, the protective caps at the end of our chromosomes, shorten each time a cell divides

Interval Training’s Edge for Cardiometabolic Health in Sedentary Young Men For sedentary individuals, any exercise improves health markers

Beyond Insulin: A New Genetic Link Between Memory, Movement, and Metabolism Memory deficits, mild motor impairment, and an increased risk for Metabolic …

Key Takeaways Autophagy, the cell’s recycling system, is vital for muscle health and declines with age, contributing to sarcopenia. Physical exercise directly stimulates autophagy, which helps clean out damaged cellular components and supports mitochondrial quality. The polyamine spermidine is a potent natural inducer of autophagy, and its levels are linked to cellular resilience and longevity….

Inside the Heart of the Marathon: A Systematic Review Reveals Acute Cardiac Effects A 2026 systematic review and meta-analysis in BMJ Open Sport & Exerc…

HIIT: A Microscope on the Body’s Stress Response Deciding between long, steady Zone 2 training and intense HIIT workouts often centers on fitness goals

Exercise transforms skeletal muscle