Running

Personally I can't see why you'd want to either, getting out into the countryside is what running is all about for me - I can't imagine anything worse than being stuck in a gym.

This x1000.

I love being outside, running and cycling just help with that.

If I'm doing intervals running a football pitch helps, sprint diagonally then jog across the width. Keep it up you'll feel on fire then collapse into a heap!