Jannik Sinner has made an empathic start to his reign atop the ATP Rankings – and the Italian currently holds an incredible ...

Zone 1 (55-65% of max heart rate): This is the "conversational pace" zone. You work at a light intensity, so you can easily chat without losing your breath. This pace is ideal for burning fat and is ...

A running coach provides a beginner’s guide on RPE and explains whether the scale is worth using to guide your runs ...