Outdoor Running
The most calorie-dense cardio per minute, and the most honest about your fitness.
Choose an effort level
Easy
Conversational. You could hold a full sentence.
Moderate
Around 10 min/mile. Talking is possible but clipped.
Hard
8 min/mile or faster. A few words at a time.
MET values reference the 2024 Adult Compendium of Physical Activities. They are population averages, not personal measurements.
Technique cues
- Land under your hips, not out in front of you.
- Keep cadence quick — around 170–180 steps a minute stops overstriding.
- Run tall, ribs stacked over hips, shoulders loose.
- Drive the elbows back rather than swinging arms across the body.
- Breathe rhythmically; fix your breathing before you fix your pace.
Common mistakes
- Starting every run at the same middling hard pace.
- Heel striking well ahead of the body, which brakes each step.
- Adding distance and speed in the same week.
- Ignoring shoe mileage until something hurts.
A starter session
20 minutes easy. If you cannot hold a conversation, slow down — that is the session, not a failure.
Who it may suit
High impact. Builds bone density but loads knees, shins and Achilles. Increase weekly volume gradually and keep most runs easy.