Longevity Notes

How Long Should You Rest Between Sets?

Haris Ruzdic

Published on: 23/03/2026

Rest between sets affects strength, muscle growth, and training performance. Learn how long you should rest depending on your training goal.

Diet Soda, Aspartame, and the Truth: A Coach Haris evidence based guide

Haris Ruzdic

Published on: 16/03/2026

Is Diet soda dangerous? This evidence based guide explains the science behind aspartame, cancer risk, and what research actually shows about artificial sweeteners.

Best Rep Range for Muscle Growth: What Science Says

Haris Ruzdic

Published on: 09/03/2026

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.

Zone 2 Cardio Explained: What It Is and Why It Improves Endurance and Longevity

Haris Ruzdic

Published on: 02/03/2026

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.

Progressive Overload in Strength Training: How Muscles Get Stronger Over Time

Haris Ruzdic

Published on: 23/02/2026

Progressive overload is the key principle behind strength training and muscle growth. Learn how increasing weight, repetitions, effort, and training volume drives long term progress.

Training During Ramadan in Dubai: How to Stay Strong While Fasting

Haris Ruzdic

Published on: 18/02/2026

Fasting during Ramadan changes hydration, sleep, and recovery. Learn how to adjust training in Dubai to maintain strength, protect muscle, and stay consistent.