How Long Should You Rest Between Sets?
Rest between sets affects strength, muscle growth, and training performance. Learn how long you should rest depending on your training goal. ...more
Training ,Fitness Industry Insights
March 23, 2026•5 min read
Diet Soda, Aspartame, and the Truth: A Coach Haris evidence based guide
Is Diet soda dangerous? This evidence based guide explains the science behind aspartame, cancer risk, and what research actually shows about artificial sweeteners. ...more
Nutrition ,Fitness Industry Insights
March 16, 2026•7 min read
Best Rep Range for Muscle Growth: What Science Says
What is the best rep range to build muscle? Research shows muscle growth can occur across a wide range of repetitions when training effort is high. ...more
Training ,Fitness Industry Insights
March 09, 2026•5 min read
Zone 2 Cardio Explained: What It Is and Why It Improves Endurance and Longevity
Zone 2 cardio improves endurance, metabolic health, and cardiovascular fitness. Learn what Zone 2 training is, how it works, and how it fits with strength training. ...more
Training ,Fitness Industry Insights
March 02, 2026•6 min read
