If you want to run 6 minute miles or under, just make sure that optimum health isn't your goal. It's fine if that's something you want to do, but that will definitely lump you into the chronic cardio group. There's nothing redeeming about a 6 minute mile IMO. It's far too fast to efficiently burn fat, and it's far too slow for sprints. I do 11 minute mile jogging for low level cardio and alternate between walking and 4:45-5:00 mile sprints. Running at a 10mph pace for an entire mile is going to put your heart in the worst zone it can be in in terms of fat loss and muscle decay, and it's not great for your heart, either. Imagine if you tried to make your chest stronger by holding a heavy weighed bar 6" above it for 18 minutes. That won't do a damn thing to make your chest stronger, but it will cause some major injury and muscle fatigue. That's what running at the same fast pace for 18 minutes does to your heart - it's a muscle like any other and benefits from either low level prolonged exercise or bouts of very slow to very fast intervals from sprints.
I'm not trying to scare you. I just want you to be informed. Reaching your goal probably won't hurt you, but it could have longterm repercussions if you continue it for years upon years. This is the method you should follow if you want to be in shape, but skinny fat, weak and in a constant state of catabolism. If you're going for that ripped, toned look, 6 minute miles won't get you there. They'll have you looking like a pasty cyclist with a fannypack.
Last edited by ChocoTaco369; 07-14-2011 at 06:45 AM.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.